Home / 66,154,426.90-99,231,640.36-20,730,145.30

Finding the Fourth Proportional to 66,154,426.90, 99,231,640.36 and 20,730,145.30

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Solution

The fourth proportional to 66,154,426.90, 99,231,640.36 and 20,730,145.30 is: 31,095,217.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,154,426.90 : 99,231,640.36 = 20,730,145.30 : x
  2. Step 2: Convert to fraction form
    66,154,426.90/99,231,640.36 = 20,730,145.30/x
  3. Step 3: Cross multiply
    66,154,426.90x = 99,231,640.36 × 20,730,145.30
  4. Step 4: Simplify right side
    66,154,426.90x = 2,057,086,323,020,144.25
  5. Step 5: Solve for x
    x = 2,057,086,323,020,144.25/66,154,426.90
  6. Step 6: Final answer
    x = 31,095,217.95

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.