Home / 81,641.90-112,670.87-54,371.23

Finding the Fourth Proportional to 81,641.90, 112,670.87 and 54,371.23

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Solution

The fourth proportional to 81,641.90, 112,670.87 and 54,371.23 is: 75,035.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,641.90 : 112,670.87 = 54,371.23 : x
  2. Step 2: Convert to fraction form
    81,641.90/112,670.87 = 54,371.23/x
  3. Step 3: Cross multiply
    81,641.90x = 112,670.87 × 54,371.23
  4. Step 4: Simplify right side
    81,641.90x = 6,126,052,951.86
  5. Step 5: Solve for x
    x = 6,126,052,951.86/81,641.90
  6. Step 6: Final answer
    x = 75,035.65

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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.