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Finding the Fourth Proportional to 66,010.71, 98,965.02 and 21,609.75

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Solution

The fourth proportional to 66,010.71, 98,965.02 and 21,609.75 is: 32,397.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,010.71 : 98,965.02 = 21,609.75 : x
  2. Step 2: Convert to fraction form
    66,010.71/98,965.02 = 21,609.75/x
  3. Step 3: Cross multiply
    66,010.71x = 98,965.02 × 21,609.75
  4. Step 4: Simplify right side
    66,010.71x = 2,138,609,340.95
  5. Step 5: Solve for x
    x = 2,138,609,340.95/66,010.71
  6. Step 6: Final answer
    x = 32,397.91

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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.