Home / 81,939.29-122,887.05-22,778.19

Finding the Fourth Proportional to 81,939.29, 122,887.05 and 22,778.19

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Solution

The fourth proportional to 81,939.29, 122,887.05 and 22,778.19 is: 34,161.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,939.29 : 122,887.05 = 22,778.19 : x
  2. Step 2: Convert to fraction form
    81,939.29/122,887.05 = 22,778.19/x
  3. Step 3: Cross multiply
    81,939.29x = 122,887.05 × 22,778.19
  4. Step 4: Simplify right side
    81,939.29x = 2,799,144,573.44
  5. Step 5: Solve for x
    x = 2,799,144,573.44/81,939.29
  6. Step 6: Final answer
    x = 34,161.20

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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.