Home / 87,510.40-131,035.20-64,009.60

Finding the Fourth Proportional to 87,510.40, 131,035.20 and 64,009.60

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Solution

The fourth proportional to 87,510.40, 131,035.20 and 64,009.60 is: 95,845.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,510.40 : 131,035.20 = 64,009.60 : x
  2. Step 2: Convert to fraction form
    87,510.40/131,035.20 = 64,009.60/x
  3. Step 3: Cross multiply
    87,510.40x = 131,035.20 × 64,009.60
  4. Step 4: Simplify right side
    87,510.40x = 8,387,510,737.92
  5. Step 5: Solve for x
    x = 8,387,510,737.92/87,510.40
  6. Step 6: Final answer
    x = 95,845.87

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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.