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Finding the Fourth Proportional to 71,045.92, 98,042.90 and 38,780.41

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Solution

The fourth proportional to 71,045.92, 98,042.90 and 38,780.41 is: 53,516.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,045.92 : 98,042.90 = 38,780.41 : x
  2. Step 2: Convert to fraction form
    71,045.92/98,042.90 = 38,780.41/x
  3. Step 3: Cross multiply
    71,045.92x = 98,042.90 × 38,780.41
  4. Step 4: Simplify right side
    71,045.92x = 3,802,143,665.69
  5. Step 5: Solve for x
    x = 3,802,143,665.69/71,045.92
  6. Step 6: Final answer
    x = 53,516.71

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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.