Home / 80,765.24-121,147.92-38,635.38

Finding the Fourth Proportional to 80,765.24, 121,147.92 and 38,635.38

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Solution

The fourth proportional to 80,765.24, 121,147.92 and 38,635.38 is: 57,953.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,765.24 : 121,147.92 = 38,635.38 : x
  2. Step 2: Convert to fraction form
    80,765.24/121,147.92 = 38,635.38/x
  3. Step 3: Cross multiply
    80,765.24x = 121,147.92 × 38,635.38
  4. Step 4: Simplify right side
    80,765.24x = 4,680,595,925.41
  5. Step 5: Solve for x
    x = 4,680,595,925.41/80,765.24
  6. Step 6: Final answer
    x = 57,953.10

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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.