Home / 81,531.90-112,523.40-54,306.54

Finding the Fourth Proportional to 81,531.90, 112,523.40 and 54,306.54

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Solution

The fourth proportional to 81,531.90, 112,523.40 and 54,306.54 is: 74,949.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,531.90 : 112,523.40 = 54,306.54 : x
  2. Step 2: Convert to fraction form
    81,531.90/112,523.40 = 54,306.54/x
  3. Step 3: Cross multiply
    81,531.90x = 112,523.40 × 54,306.54
  4. Step 4: Simplify right side
    81,531.90x = 6,110,756,523.04
  5. Step 5: Solve for x
    x = 6,110,756,523.04/81,531.90
  6. Step 6: Final answer
    x = 74,949.27

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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.