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Finding the Fourth Proportional to 66,988.90, 100,476.42 and 33,695.38

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Solution

The fourth proportional to 66,988.90, 100,476.42 and 33,695.38 is: 50,539.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,988.90 : 100,476.42 = 33,695.38 : x
  2. Step 2: Convert to fraction form
    66,988.90/100,476.42 = 33,695.38/x
  3. Step 3: Cross multiply
    66,988.90x = 100,476.42 × 33,695.38
  4. Step 4: Simplify right side
    66,988.90x = 3,385,591,152.94
  5. Step 5: Solve for x
    x = 3,385,591,152.94/66,988.90
  6. Step 6: Final answer
    x = 50,539.58

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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.