Home / 83,235.72-125,124.24-66,775.83

Finding the Fourth Proportional to 83,235.72, 125,124.24 and 66,775.83

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Solution

The fourth proportional to 83,235.72, 125,124.24 and 66,775.83 is: 100,380.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,235.72 : 125,124.24 = 66,775.83 : x
  2. Step 2: Convert to fraction form
    83,235.72/125,124.24 = 66,775.83/x
  3. Step 3: Cross multiply
    83,235.72x = 125,124.24 × 66,775.83
  4. Step 4: Simplify right side
    83,235.72x = 8,355,274,979.12
  5. Step 5: Solve for x
    x = 8,355,274,979.12/83,235.72
  6. Step 6: Final answer
    x = 100,380.88

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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.