Home / 76,832.28-115,180.02-30,117.72

Finding the Fourth Proportional to 76,832.28, 115,180.02 and 30,117.72

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Solution

The fourth proportional to 76,832.28, 115,180.02 and 30,117.72 is: 45,149.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,832.28 : 115,180.02 = 30,117.72 : x
  2. Step 2: Convert to fraction form
    76,832.28/115,180.02 = 30,117.72/x
  3. Step 3: Cross multiply
    76,832.28x = 115,180.02 × 30,117.72
  4. Step 4: Simplify right side
    76,832.28x = 3,468,959,591.95
  5. Step 5: Solve for x
    x = 3,468,959,591.95/76,832.28
  6. Step 6: Final answer
    x = 45,149.77

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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.