Home / 83,438.09-115,145.11-45,197.64

Finding the Fourth Proportional to 83,438.09, 115,145.11 and 45,197.64

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Solution

The fourth proportional to 83,438.09, 115,145.11 and 45,197.64 is: 62,373.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,438.09 : 115,145.11 = 45,197.64 : x
  2. Step 2: Convert to fraction form
    83,438.09/115,145.11 = 45,197.64/x
  3. Step 3: Cross multiply
    83,438.09x = 115,145.11 × 45,197.64
  4. Step 4: Simplify right side
    83,438.09x = 5,204,287,286.04
  5. Step 5: Solve for x
    x = 5,204,287,286.04/83,438.09
  6. Step 6: Final answer
    x = 62,373.04

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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.