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Finding the Fourth Proportional to 61,540, 84,925.20 and 35,049.12

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Solution

The fourth proportional to 61,540, 84,925.20 and 35,049.12 is: 48,367.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,540 : 84,925.20 = 35,049.12 : x
  2. Step 2: Convert to fraction form
    61,540/84,925.20 = 35,049.12/x
  3. Step 3: Cross multiply
    61,540x = 84,925.20 × 35,049.12
  4. Step 4: Simplify right side
    61,540x = 2,976,553,525.82
  5. Step 5: Solve for x
    x = 2,976,553,525.82/61,540
  6. Step 6: Final answer
    x = 48,367.79

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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.