Home / 83,640.28-115,422.96-45,398.92

Finding the Fourth Proportional to 83,640.28, 115,422.96 and 45,398.92

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Solution

The fourth proportional to 83,640.28, 115,422.96 and 45,398.92 is: 62,650.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,640.28 : 115,422.96 = 45,398.92 : x
  2. Step 2: Convert to fraction form
    83,640.28/115,422.96 = 45,398.92/x
  3. Step 3: Cross multiply
    83,640.28x = 115,422.96 × 45,398.92
  4. Step 4: Simplify right side
    83,640.28x = 5,240,077,727.20
  5. Step 5: Solve for x
    x = 5,240,077,727.20/83,640.28
  6. Step 6: Final answer
    x = 62,650.17

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1.5x scale

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.