Home / 61,189.32-91,780.22-36,387.20

Finding the Fourth Proportional to 61,189.32, 91,780.22 and 36,387.20

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Solution

The fourth proportional to 61,189.32, 91,780.22 and 36,387.20 is: 54,578.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,189.32 : 91,780.22 = 36,387.20 : x
  2. Step 2: Convert to fraction form
    61,189.32/91,780.22 = 36,387.20/x
  3. Step 3: Cross multiply
    61,189.32x = 91,780.22 × 36,387.20
  4. Step 4: Simplify right side
    61,189.32x = 3,339,625,221.18
  5. Step 5: Solve for x
    x = 3,339,625,221.18/61,189.32
  6. Step 6: Final answer
    x = 54,578.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.