Home / 83,458.10-115,171.38-45,216.80

Finding the Fourth Proportional to 83,458.10, 115,171.38 and 45,216.80

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Solution

The fourth proportional to 83,458.10, 115,171.38 and 45,216.80 is: 62,398.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,458.10 : 115,171.38 = 45,216.80 : x
  2. Step 2: Convert to fraction form
    83,458.10/115,171.38 = 45,216.80/x
  3. Step 3: Cross multiply
    83,458.10x = 115,171.38 × 45,216.80
  4. Step 4: Simplify right side
    83,458.10x = 5,207,681,255.18
  5. Step 5: Solve for x
    x = 5,207,681,255.18/83,458.10
  6. Step 6: Final answer
    x = 62,398.75

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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.