Home / 81,927.09-113,001.12-54,689.46

Finding the Fourth Proportional to 81,927.09, 113,001.12 and 54,689.46

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Solution

The fourth proportional to 81,927.09, 113,001.12 and 54,689.46 is: 75,432.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,927.09 : 113,001.12 = 54,689.46 : x
  2. Step 2: Convert to fraction form
    81,927.09/113,001.12 = 54,689.46/x
  3. Step 3: Cross multiply
    81,927.09x = 113,001.12 × 54,689.46
  4. Step 4: Simplify right side
    81,927.09x = 6,179,970,232.20
  5. Step 5: Solve for x
    x = 6,179,970,232.20/81,927.09
  6. Step 6: Final answer
    x = 75,432.56

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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.