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Finding the Fourth Proportional to 71,291.52, 98,372 and 39,460.34

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Solution

The fourth proportional to 71,291.52, 98,372 and 39,460.34 is: 54,449.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,291.52 : 98,372 = 39,460.34 : x
  2. Step 2: Convert to fraction form
    71,291.52/98,372 = 39,460.34/x
  3. Step 3: Cross multiply
    71,291.52x = 98,372 × 39,460.34
  4. Step 4: Simplify right side
    71,291.52x = 3,881,792,566.48
  5. Step 5: Solve for x
    x = 3,881,792,566.48/71,291.52
  6. Step 6: Final answer
    x = 54,449.57

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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.