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Finding the Fourth Proportional to 71,694.58, 98,937.24 and 39,862.81

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Solution

The fourth proportional to 71,694.58, 98,937.24 and 39,862.81 is: 55,009.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,694.58 : 98,937.24 = 39,862.81 : x
  2. Step 2: Convert to fraction form
    71,694.58/98,937.24 = 39,862.81/x
  3. Step 3: Cross multiply
    71,694.58x = 98,937.24 × 39,862.81
  4. Step 4: Simplify right side
    71,694.58x = 3,943,916,400.04
  5. Step 5: Solve for x
    x = 3,943,916,400.04/71,694.58
  6. Step 6: Final answer
    x = 55,009.97

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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.