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Finding the Fourth Proportional to 48,294.80, 72,442.20 and 40,931.90

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Solution

The fourth proportional to 48,294.80, 72,442.20 and 40,931.90 is: 61,397.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,294.80 : 72,442.20 = 40,931.90 : x
  2. Step 2: Convert to fraction form
    48,294.80/72,442.20 = 40,931.90/x
  3. Step 3: Cross multiply
    48,294.80x = 72,442.20 × 40,931.90
  4. Step 4: Simplify right side
    48,294.80x = 2,965,196,886.18
  5. Step 5: Solve for x
    x = 2,965,196,886.18/48,294.80
  6. Step 6: Final answer
    x = 61,397.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.