Home / 80,679.44-121,106.28-61,171.04

Finding the Fourth Proportional to 80,679.44, 121,106.28 and 61,171.04

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Solution

The fourth proportional to 80,679.44, 121,106.28 and 61,171.04 is: 91,822.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,679.44 : 121,106.28 = 61,171.04 : x
  2. Step 2: Convert to fraction form
    80,679.44/121,106.28 = 61,171.04/x
  3. Step 3: Cross multiply
    80,679.44x = 121,106.28 × 61,171.04
  4. Step 4: Simplify right side
    80,679.44x = 7,408,197,098.13
  5. Step 5: Solve for x
    x = 7,408,197,098.13/80,679.44
  6. Step 6: Final answer
    x = 91,822.61

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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.