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Finding the Fourth Proportional to 71,712.54, 98,894.61 and 47,475.12

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Solution

The fourth proportional to 71,712.54, 98,894.61 and 47,475.12 is: 65,470.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,712.54 : 98,894.61 = 47,475.12 : x
  2. Step 2: Convert to fraction form
    71,712.54/98,894.61 = 47,475.12/x
  3. Step 3: Cross multiply
    71,712.54x = 98,894.61 × 47,475.12
  4. Step 4: Simplify right side
    71,712.54x = 4,695,033,477.10
  5. Step 5: Solve for x
    x = 4,695,033,477.10/71,712.54
  6. Step 6: Final answer
    x = 65,470.19

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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.