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Finding the Fourth Proportional to 48,397.66, 72,601.08 and 18,817.78

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Solution

The fourth proportional to 48,397.66, 72,601.08 and 18,817.78 is: 28,228.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,397.66 : 72,601.08 = 18,817.78 : x
  2. Step 2: Convert to fraction form
    48,397.66/72,601.08 = 18,817.78/x
  3. Step 3: Cross multiply
    48,397.66x = 72,601.08 × 18,817.78
  4. Step 4: Simplify right side
    48,397.66x = 1,366,191,151.20
  5. Step 5: Solve for x
    x = 1,366,191,151.20/48,397.66
  6. Step 6: Final answer
    x = 28,228.45

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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.