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Finding the Fourth Proportional to 71,370.60, 98,492.22 and 39,540

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Solution

The fourth proportional to 71,370.60, 98,492.22 and 39,540 is: 54,565.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,370.60 : 98,492.22 = 39,540 : x
  2. Step 2: Convert to fraction form
    71,370.60/98,492.22 = 39,540/x
  3. Step 3: Cross multiply
    71,370.60x = 98,492.22 × 39,540
  4. Step 4: Simplify right side
    71,370.60x = 3,894,382,378.80
  5. Step 5: Solve for x
    x = 3,894,382,378.80/71,370.60
  6. Step 6: Final answer
    x = 54,565.64

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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.