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Finding the Fourth Proportional to 87,163.92, 130,624.92 and 45,527.76

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Solution

The fourth proportional to 87,163.92, 130,624.92 and 45,527.76 is: 68,228.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,163.92 : 130,624.92 = 45,527.76 : x
  2. Step 2: Convert to fraction form
    87,163.92/130,624.92 = 45,527.76/x
  3. Step 3: Cross multiply
    87,163.92x = 130,624.92 × 45,527.76
  4. Step 4: Simplify right side
    87,163.92x = 5,947,060,007.78
  5. Step 5: Solve for x
    x = 5,947,060,007.78/87,163.92
  6. Step 6: Final answer
    x = 68,228.46

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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.