Home / 81,639.18-122,344.76-44,118.36

Finding the Fourth Proportional to 81,639.18, 122,344.76 and 44,118.36

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Solution

The fourth proportional to 81,639.18, 122,344.76 and 44,118.36 is: 66,115.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,639.18 : 122,344.76 = 44,118.36 : x
  2. Step 2: Convert to fraction form
    81,639.18/122,344.76 = 44,118.36/x
  3. Step 3: Cross multiply
    81,639.18x = 122,344.76 × 44,118.36
  4. Step 4: Simplify right side
    81,639.18x = 5,397,650,165.79
  5. Step 5: Solve for x
    x = 5,397,650,165.79/81,639.18
  6. Step 6: Final answer
    x = 66,115.93

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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.