Home / 83,561.91-115,272.51-54,877.43

Finding the Fourth Proportional to 83,561.91, 115,272.51 and 54,877.43

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Solution

The fourth proportional to 83,561.91, 115,272.51 and 54,877.43 is: 75,702.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,561.91 : 115,272.51 = 54,877.43 : x
  2. Step 2: Convert to fraction form
    83,561.91/115,272.51 = 54,877.43/x
  3. Step 3: Cross multiply
    83,561.91x = 115,272.51 × 54,877.43
  4. Step 4: Simplify right side
    83,561.91x = 6,325,858,522.09
  5. Step 5: Solve for x
    x = 6,325,858,522.09/83,561.91
  6. Step 6: Final answer
    x = 75,702.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.