Home / 83,719.78-115,534.55-45,480.08

Finding the Fourth Proportional to 83,719.78, 115,534.55 and 45,480.08

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Solution

The fourth proportional to 83,719.78, 115,534.55 and 45,480.08 is: 62,763.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,719.78 : 115,534.55 = 45,480.08 : x
  2. Step 2: Convert to fraction form
    83,719.78/115,534.55 = 45,480.08/x
  3. Step 3: Cross multiply
    83,719.78x = 115,534.55 × 45,480.08
  4. Step 4: Simplify right side
    83,719.78x = 5,254,520,979.30
  5. Step 5: Solve for x
    x = 5,254,520,979.30/83,719.78
  6. Step 6: Final answer
    x = 62,763.20

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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.