Home / 81,772.60-112,863.18-48,249.40

Finding the Fourth Proportional to 81,772.60, 112,863.18 and 48,249.40

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Solution

The fourth proportional to 81,772.60, 112,863.18 and 48,249.40 is: 66,594.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,772.60 : 112,863.18 = 48,249.40 : x
  2. Step 2: Convert to fraction form
    81,772.60/112,863.18 = 48,249.40/x
  3. Step 3: Cross multiply
    81,772.60x = 112,863.18 × 48,249.40
  4. Step 4: Simplify right side
    81,772.60x = 5,445,580,717.09
  5. Step 5: Solve for x
    x = 5,445,580,717.09/81,772.60
  6. Step 6: Final answer
    x = 66,594.20

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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.