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Finding the Fourth Proportional to 71,454.88, 98,607.18 and 39,623.86

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Solution

The fourth proportional to 71,454.88, 98,607.18 and 39,623.86 is: 54,680.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,454.88 : 98,607.18 = 39,623.86 : x
  2. Step 2: Convert to fraction form
    71,454.88/98,607.18 = 39,623.86/x
  3. Step 3: Cross multiply
    71,454.88x = 98,607.18 × 39,623.86
  4. Step 4: Simplify right side
    71,454.88x = 3,907,197,095.31
  5. Step 5: Solve for x
    x = 3,907,197,095.31/71,454.88
  6. Step 6: Final answer
    x = 54,680.62

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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.