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Finding the Fourth Proportional to 48,487.40, 72,718.30 and 15,207.40

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Solution

The fourth proportional to 48,487.40, 72,718.30 and 15,207.40 is: 22,807.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,487.40 : 72,718.30 = 15,207.40 : x
  2. Step 2: Convert to fraction form
    48,487.40/72,718.30 = 15,207.40/x
  3. Step 3: Cross multiply
    48,487.40x = 72,718.30 × 15,207.40
  4. Step 4: Simplify right side
    48,487.40x = 1,105,856,275.42
  5. Step 5: Solve for x
    x = 1,105,856,275.42/48,487.40
  6. Step 6: Final answer
    x = 22,807.09

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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.