Home / 83,919.92-115,810.68-45,680.64

Finding the Fourth Proportional to 83,919.92, 115,810.68 and 45,680.64

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Solution

The fourth proportional to 83,919.92, 115,810.68 and 45,680.64 is: 63,039.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,919.92 : 115,810.68 = 45,680.64 : x
  2. Step 2: Convert to fraction form
    83,919.92/115,810.68 = 45,680.64/x
  3. Step 3: Cross multiply
    83,919.92x = 115,810.68 × 45,680.64
  4. Step 4: Simplify right side
    83,919.92x = 5,290,305,981.24
  5. Step 5: Solve for x
    x = 5,290,305,981.24/83,919.92
  6. Step 6: Final answer
    x = 63,039.93

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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.