Home / 81,648.60-112,687.38-49,835.94

Finding the Fourth Proportional to 81,648.60, 112,687.38 and 49,835.94

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Solution

The fourth proportional to 81,648.60, 112,687.38 and 49,835.94 is: 68,781.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,648.60 : 112,687.38 = 49,835.94 : x
  2. Step 2: Convert to fraction form
    81,648.60/112,687.38 = 49,835.94/x
  3. Step 3: Cross multiply
    81,648.60x = 112,687.38 × 49,835.94
  4. Step 4: Simplify right side
    81,648.60x = 5,615,881,508.44
  5. Step 5: Solve for x
    x = 5,615,881,508.44/81,648.60
  6. Step 6: Final answer
    x = 68,781.11

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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.