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Finding the Fourth Proportional to 48,414.30, 72,607.05 and 18,815.10

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Solution

The fourth proportional to 48,414.30, 72,607.05 and 18,815.10 is: 28,217.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,414.30 : 72,607.05 = 18,815.10 : x
  2. Step 2: Convert to fraction form
    48,414.30/72,607.05 = 18,815.10/x
  3. Step 3: Cross multiply
    48,414.30x = 72,607.05 × 18,815.10
  4. Step 4: Simplify right side
    48,414.30x = 1,366,108,906.46
  5. Step 5: Solve for x
    x = 1,366,108,906.46/48,414.30
  6. Step 6: Final answer
    x = 28,217.05

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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.