Home / 87,664.10-131,168.10-58,139.60

Finding the Fourth Proportional to 87,664.10, 131,168.10 and 58,139.60

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Solution

The fourth proportional to 87,664.10, 131,168.10 and 58,139.60 is: 86,991.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,664.10 : 131,168.10 = 58,139.60 : x
  2. Step 2: Convert to fraction form
    87,664.10/131,168.10 = 58,139.60/x
  3. Step 3: Cross multiply
    87,664.10x = 131,168.10 × 58,139.60
  4. Step 4: Simplify right side
    87,664.10x = 7,626,060,866.76
  5. Step 5: Solve for x
    x = 7,626,060,866.76/87,664.10
  6. Step 6: Final answer
    x = 86,991.83

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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.