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Finding the Fourth Proportional to 87,193.92, 130,868.64 and 40,473.12

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Solution

The fourth proportional to 87,193.92, 130,868.64 and 40,473.12 is: 60,745.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,193.92 : 130,868.64 = 40,473.12 : x
  2. Step 2: Convert to fraction form
    87,193.92/130,868.64 = 40,473.12/x
  3. Step 3: Cross multiply
    87,193.92x = 130,868.64 × 40,473.12
  4. Step 4: Simplify right side
    87,193.92x = 5,296,662,170.96
  5. Step 5: Solve for x
    x = 5,296,662,170.96/87,193.92
  6. Step 6: Final answer
    x = 60,745.77

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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.