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Finding the Fourth Proportional to 71,593.36, 98,800.89 and 39,764.31

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Solution

The fourth proportional to 71,593.36, 98,800.89 and 39,764.31 is: 54,875.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,593.36 : 98,800.89 = 39,764.31 : x
  2. Step 2: Convert to fraction form
    71,593.36/98,800.89 = 39,764.31/x
  3. Step 3: Cross multiply
    71,593.36x = 98,800.89 × 39,764.31
  4. Step 4: Simplify right side
    71,593.36x = 3,928,749,218.24
  5. Step 5: Solve for x
    x = 3,928,749,218.24/71,593.36
  6. Step 6: Final answer
    x = 54,875.89

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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.