Home / 87,529.57-120,792.36-51,719.50

Finding the Fourth Proportional to 87,529.57, 120,792.36 and 51,719.50

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Solution

The fourth proportional to 87,529.57, 120,792.36 and 51,719.50 is: 71,373.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,529.57 : 120,792.36 = 51,719.50 : x
  2. Step 2: Convert to fraction form
    87,529.57/120,792.36 = 51,719.50/x
  3. Step 3: Cross multiply
    87,529.57x = 120,792.36 × 51,719.50
  4. Step 4: Simplify right side
    87,529.57x = 6,247,320,463.02
  5. Step 5: Solve for x
    x = 6,247,320,463.02/87,529.57
  6. Step 6: Final answer
    x = 71,373.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.