Home / 87,318.48-131,003.28-28,152.96

Finding the Fourth Proportional to 87,318.48, 131,003.28 and 28,152.96

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Solution

The fourth proportional to 87,318.48, 131,003.28 and 28,152.96 is: 42,237.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,318.48 : 131,003.28 = 28,152.96 : x
  2. Step 2: Convert to fraction form
    87,318.48/131,003.28 = 28,152.96/x
  3. Step 3: Cross multiply
    87,318.48x = 131,003.28 × 28,152.96
  4. Step 4: Simplify right side
    87,318.48x = 3,688,130,101.71
  5. Step 5: Solve for x
    x = 3,688,130,101.71/87,318.48
  6. Step 6: Final answer
    x = 42,237.68

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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.