Home / 72,331.10-108,387.30-61,177.40

Finding the Fourth Proportional to 72,331.10, 108,387.30 and 61,177.40

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Solution

The fourth proportional to 72,331.10, 108,387.30 and 61,177.40 is: 91,673.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,331.10 : 108,387.30 = 61,177.40 : x
  2. Step 2: Convert to fraction form
    72,331.10/108,387.30 = 61,177.40/x
  3. Step 3: Cross multiply
    72,331.10x = 108,387.30 × 61,177.40
  4. Step 4: Simplify right side
    72,331.10x = 6,630,853,207.02
  5. Step 5: Solve for x
    x = 6,630,853,207.02/72,331.10
  6. Step 6: Final answer
    x = 91,673.61

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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.