Home / 80,844.22-121,328.60-65,087.80

Finding the Fourth Proportional to 80,844.22, 121,328.60 and 65,087.80

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Solution

The fourth proportional to 80,844.22, 121,328.60 and 65,087.80 is: 97,681.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,844.22 : 121,328.60 = 65,087.80 : x
  2. Step 2: Convert to fraction form
    80,844.22/121,328.60 = 65,087.80/x
  3. Step 3: Cross multiply
    80,844.22x = 121,328.60 × 65,087.80
  4. Step 4: Simplify right side
    80,844.22x = 7,897,011,651.08
  5. Step 5: Solve for x
    x = 7,897,011,651.08/80,844.22
  6. Step 6: Final answer
    x = 97,681.83

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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.