Home / 66,221.50-99,266.64-31,098.28

Finding the Fourth Proportional to 66,221.50, 99,266.64 and 31,098.28

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Solution

The fourth proportional to 66,221.50, 99,266.64 and 31,098.28 is: 46,616.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,221.50 : 99,266.64 = 31,098.28 : x
  2. Step 2: Convert to fraction form
    66,221.50/99,266.64 = 31,098.28/x
  3. Step 3: Cross multiply
    66,221.50x = 99,266.64 × 31,098.28
  4. Step 4: Simplify right side
    66,221.50x = 3,087,021,765.38
  5. Step 5: Solve for x
    x = 3,087,021,765.38/66,221.50
  6. Step 6: Final answer
    x = 46,616.61

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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.