Home / 80,760.18-121,181.96-38,631.72

Finding the Fourth Proportional to 80,760.18, 121,181.96 and 38,631.72

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Solution

The fourth proportional to 80,760.18, 121,181.96 and 38,631.72 is: 57,967.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,760.18 : 121,181.96 = 38,631.72 : x
  2. Step 2: Convert to fraction form
    80,760.18/121,181.96 = 38,631.72/x
  3. Step 3: Cross multiply
    80,760.18x = 121,181.96 × 38,631.72
  4. Step 4: Simplify right side
    80,760.18x = 4,681,467,354.61
  5. Step 5: Solve for x
    x = 4,681,467,354.61/80,760.18
  6. Step 6: Final answer
    x = 57,967.52

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1.5x scale

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.