Home / 81,708.32-112,769.68-49,895.52

Finding the Fourth Proportional to 81,708.32, 112,769.68 and 49,895.52

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Solution

The fourth proportional to 81,708.32, 112,769.68 and 49,895.52 is: 68,863.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,708.32 : 112,769.68 = 49,895.52 : x
  2. Step 2: Convert to fraction form
    81,708.32/112,769.68 = 49,895.52/x
  3. Step 3: Cross multiply
    81,708.32x = 112,769.68 × 49,895.52
  4. Step 4: Simplify right side
    81,708.32x = 5,626,701,823.83
  5. Step 5: Solve for x
    x = 5,626,701,823.83/81,708.32
  6. Step 6: Final answer
    x = 68,863.27

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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.