Home / 81,929.60-113,004.56-54,691.96

Finding the Fourth Proportional to 81,929.60, 113,004.56 and 54,691.96

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Solution

The fourth proportional to 81,929.60, 113,004.56 and 54,691.96 is: 75,435.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,929.60 : 113,004.56 = 54,691.96 : x
  2. Step 2: Convert to fraction form
    81,929.60/113,004.56 = 54,691.96/x
  3. Step 3: Cross multiply
    81,929.60x = 113,004.56 × 54,691.96
  4. Step 4: Simplify right side
    81,929.60x = 6,180,440,875.34
  5. Step 5: Solve for x
    x = 6,180,440,875.34/81,929.60
  6. Step 6: Final answer
    x = 75,435.99

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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.