Home / 80,939.58-121,423.98-36,587.22

Finding the Fourth Proportional to 80,939.58, 121,423.98 and 36,587.22

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Solution

The fourth proportional to 80,939.58, 121,423.98 and 36,587.22 is: 54,887.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,939.58 : 121,423.98 = 36,587.22 : x
  2. Step 2: Convert to fraction form
    80,939.58/121,423.98 = 36,587.22/x
  3. Step 3: Cross multiply
    80,939.58x = 121,423.98 × 36,587.22
  4. Step 4: Simplify right side
    80,939.58x = 4,442,565,869.54
  5. Step 5: Solve for x
    x = 4,442,565,869.54/80,939.58
  6. Step 6: Final answer
    x = 54,887.43

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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.