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Finding the Fourth Proportional to 48,588.61, 72,893 and 20,508.90

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Solution

The fourth proportional to 48,588.61, 72,893 and 20,508.90 is: 30,767.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,588.61 : 72,893 = 20,508.90 : x
  2. Step 2: Convert to fraction form
    48,588.61/72,893 = 20,508.90/x
  3. Step 3: Cross multiply
    48,588.61x = 72,893 × 20,508.90
  4. Step 4: Simplify right side
    48,588.61x = 1,494,955,247.70
  5. Step 5: Solve for x
    x = 1,494,955,247.70/48,588.61
  6. Step 6: Final answer
    x = 30,767.61

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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.