Home / 80,845.22-121,330.10-65,088.80

Finding the Fourth Proportional to 80,845.22, 121,330.10 and 65,088.80

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Solution

The fourth proportional to 80,845.22, 121,330.10 and 65,088.80 is: 97,683.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,845.22 : 121,330.10 = 65,088.80 : x
  2. Step 2: Convert to fraction form
    80,845.22/121,330.10 = 65,088.80/x
  3. Step 3: Cross multiply
    80,845.22x = 121,330.10 × 65,088.80
  4. Step 4: Simplify right side
    80,845.22x = 7,897,230,612.88
  5. Step 5: Solve for x
    x = 7,897,230,612.88/80,845.22
  6. Step 6: Final answer
    x = 97,683.33

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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.