Home / 87,775.28-131,356.68-71,795.60

Finding the Fourth Proportional to 87,775.28, 131,356.68 and 71,795.60

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Solution

The fourth proportional to 87,775.28, 131,356.68 and 71,795.60 is: 107,442.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,775.28 : 131,356.68 = 71,795.60 : x
  2. Step 2: Convert to fraction form
    87,775.28/131,356.68 = 71,795.60/x
  3. Step 3: Cross multiply
    87,775.28x = 131,356.68 × 71,795.60
  4. Step 4: Simplify right side
    87,775.28x = 9,430,831,654.61
  5. Step 5: Solve for x
    x = 9,430,831,654.61/87,775.28
  6. Step 6: Final answer
    x = 107,442.91

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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.