Home / 80,764.40-121,146.60-49,617.20

Finding the Fourth Proportional to 80,764.40, 121,146.60 and 49,617.20

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Solution

The fourth proportional to 80,764.40, 121,146.60 and 49,617.20 is: 74,425.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,764.40 : 121,146.60 = 49,617.20 : x
  2. Step 2: Convert to fraction form
    80,764.40/121,146.60 = 49,617.20/x
  3. Step 3: Cross multiply
    80,764.40x = 121,146.60 × 49,617.20
  4. Step 4: Simplify right side
    80,764.40x = 6,010,955,081.52
  5. Step 5: Solve for x
    x = 6,010,955,081.52/80,764.40
  6. Step 6: Final answer
    x = 74,425.80

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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.