Home / 81,880.38-122,837.90-25,726.19

Finding the Fourth Proportional to 81,880.38, 122,837.90 and 25,726.19

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Solution

The fourth proportional to 81,880.38, 122,837.90 and 25,726.19 is: 38,594.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,880.38 : 122,837.90 = 25,726.19 : x
  2. Step 2: Convert to fraction form
    81,880.38/122,837.90 = 25,726.19/x
  3. Step 3: Cross multiply
    81,880.38x = 122,837.90 × 25,726.19
  4. Step 4: Simplify right side
    81,880.38x = 3,160,150,411.78
  5. Step 5: Solve for x
    x = 3,160,150,411.78/81,880.38
  6. Step 6: Final answer
    x = 38,594.72

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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.