Home / 80,877.50-121,182.08-49,191.68

Finding the Fourth Proportional to 80,877.50, 121,182.08 and 49,191.68

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Solution

The fourth proportional to 80,877.50, 121,182.08 and 49,191.68 is: 73,705.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,877.50 : 121,182.08 = 49,191.68 : x
  2. Step 2: Convert to fraction form
    80,877.50/121,182.08 = 49,191.68/x
  3. Step 3: Cross multiply
    80,877.50x = 121,182.08 × 49,191.68
  4. Step 4: Simplify right side
    80,877.50x = 5,961,150,101.09
  5. Step 5: Solve for x
    x = 5,961,150,101.09/80,877.50
  6. Step 6: Final answer
    x = 73,705.91

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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.