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Finding the Fourth Proportional to 83,662.65, 115,454.60 and 45,422.20

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Solution

The fourth proportional to 83,662.65, 115,454.60 and 45,422.20 is: 62,682.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,662.65 : 115,454.60 = 45,422.20 : x
  2. Step 2: Convert to fraction form
    83,662.65/115,454.60 = 45,422.20/x
  3. Step 3: Cross multiply
    83,662.65x = 115,454.60 × 45,422.20
  4. Step 4: Simplify right side
    83,662.65x = 5,244,201,932.12
  5. Step 5: Solve for x
    x = 5,244,201,932.12/83,662.65
  6. Step 6: Final answer
    x = 62,682.71

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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.