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Finding the Fourth Proportional to 48,414.87, 72,621.90 and 28,679.22

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Solution

The fourth proportional to 48,414.87, 72,621.90 and 28,679.22 is: 43,018.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,414.87 : 72,621.90 = 28,679.22 : x
  2. Step 2: Convert to fraction form
    48,414.87/72,621.90 = 28,679.22/x
  3. Step 3: Cross multiply
    48,414.87x = 72,621.90 × 28,679.22
  4. Step 4: Simplify right side
    48,414.87x = 2,082,739,446.92
  5. Step 5: Solve for x
    x = 2,082,739,446.92/48,414.87
  6. Step 6: Final answer
    x = 43,018.59

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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.