Home / 81,641.40-112,670.18-54,370.73

Finding the Fourth Proportional to 81,641.40, 112,670.18 and 54,370.73

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Solution

The fourth proportional to 81,641.40, 112,670.18 and 54,370.73 is: 75,034.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,641.40 : 112,670.18 = 54,370.73 : x
  2. Step 2: Convert to fraction form
    81,641.40/112,670.18 = 54,370.73/x
  3. Step 3: Cross multiply
    81,641.40x = 112,670.18 × 54,370.73
  4. Step 4: Simplify right side
    81,641.40x = 6,125,959,100.63
  5. Step 5: Solve for x
    x = 6,125,959,100.63/81,641.40
  6. Step 6: Final answer
    x = 75,034.96

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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.