Home / 80,662.52-120,916.02-38,531.18

Finding the Fourth Proportional to 80,662.52, 120,916.02 and 38,531.18

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Solution

The fourth proportional to 80,662.52, 120,916.02 and 38,531.18 is: 57,759.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,662.52 : 120,916.02 = 38,531.18 : x
  2. Step 2: Convert to fraction form
    80,662.52/120,916.02 = 38,531.18/x
  3. Step 3: Cross multiply
    80,662.52x = 120,916.02 × 38,531.18
  4. Step 4: Simplify right side
    80,662.52x = 4,659,036,931.50
  5. Step 5: Solve for x
    x = 4,659,036,931.50/80,662.52
  6. Step 6: Final answer
    x = 57,759.63

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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.