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Finding the Fourth Proportional to 65,612.80, 98,397.28 and 21,227.68

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Solution

The fourth proportional to 65,612.80, 98,397.28 and 21,227.68 is: 31,834.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,612.80 : 98,397.28 = 21,227.68 : x
  2. Step 2: Convert to fraction form
    65,612.80/98,397.28 = 21,227.68/x
  3. Step 3: Cross multiply
    65,612.80x = 98,397.28 × 21,227.68
  4. Step 4: Simplify right side
    65,612.80x = 2,088,745,972.71
  5. Step 5: Solve for x
    x = 2,088,745,972.71/65,612.80
  6. Step 6: Final answer
    x = 31,834.43

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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.