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Finding the Fourth Proportional to 48,468.20, 72,680.70 and 18,876.20

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Solution

The fourth proportional to 48,468.20, 72,680.70 and 18,876.20 is: 28,305.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,468.20 : 72,680.70 = 18,876.20 : x
  2. Step 2: Convert to fraction form
    48,468.20/72,680.70 = 18,876.20/x
  3. Step 3: Cross multiply
    48,468.20x = 72,680.70 × 18,876.20
  4. Step 4: Simplify right side
    48,468.20x = 1,371,935,429.34
  5. Step 5: Solve for x
    x = 1,371,935,429.34/48,468.20
  6. Step 6: Final answer
    x = 28,305.89

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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.