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Finding the Fourth Proportional to 70,761.91, 97,651.43 and 38,930.13

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Solution

The fourth proportional to 70,761.91, 97,651.43 and 38,930.13 is: 53,723.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,761.91 : 97,651.43 = 38,930.13 : x
  2. Step 2: Convert to fraction form
    70,761.91/97,651.43 = 38,930.13/x
  3. Step 3: Cross multiply
    70,761.91x = 97,651.43 × 38,930.13
  4. Step 4: Simplify right side
    70,761.91x = 3,801,582,864.59
  5. Step 5: Solve for x
    x = 3,801,582,864.59/70,761.91
  6. Step 6: Final answer
    x = 53,723.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.