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Finding the Fourth Proportional to 48,687.87, 73,041.28 and 18,699.92

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Solution

The fourth proportional to 48,687.87, 73,041.28 and 18,699.92 is: 28,053.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,687.87 : 73,041.28 = 18,699.92 : x
  2. Step 2: Convert to fraction form
    48,687.87/73,041.28 = 18,699.92/x
  3. Step 3: Cross multiply
    48,687.87x = 73,041.28 × 18,699.92
  4. Step 4: Simplify right side
    48,687.87x = 1,365,865,901.05
  5. Step 5: Solve for x
    x = 1,365,865,901.05/48,687.87
  6. Step 6: Final answer
    x = 28,053.51

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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.