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Finding the Fourth Proportional to 71,053.89, 98,053.17 and 39,221.97

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Solution

The fourth proportional to 71,053.89, 98,053.17 and 39,221.97 is: 54,125.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,053.89 : 98,053.17 = 39,221.97 : x
  2. Step 2: Convert to fraction form
    71,053.89/98,053.17 = 39,221.97/x
  3. Step 3: Cross multiply
    71,053.89x = 98,053.17 × 39,221.97
  4. Step 4: Simplify right side
    71,053.89x = 3,845,838,492.14
  5. Step 5: Solve for x
    x = 3,845,838,492.14/71,053.89
  6. Step 6: Final answer
    x = 54,125.66

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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.