Home / 80,849.22-121,336.10-65,092.80

Finding the Fourth Proportional to 80,849.22, 121,336.10 and 65,092.80

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Solution

The fourth proportional to 80,849.22, 121,336.10 and 65,092.80 is: 97,689.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,849.22 : 121,336.10 = 65,092.80 : x
  2. Step 2: Convert to fraction form
    80,849.22/121,336.10 = 65,092.80/x
  3. Step 3: Cross multiply
    80,849.22x = 121,336.10 × 65,092.80
  4. Step 4: Simplify right side
    80,849.22x = 7,898,106,490.08
  5. Step 5: Solve for x
    x = 7,898,106,490.08/80,849.22
  6. Step 6: Final answer
    x = 97,689.33

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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.