Home / 90,711.22-125,184.05-54,907.70

Finding the Fourth Proportional to 90,711.22, 125,184.05 and 54,907.70

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Solution

The fourth proportional to 90,711.22, 125,184.05 and 54,907.70 is: 75,774.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,711.22 : 125,184.05 = 54,907.70 : x
  2. Step 2: Convert to fraction form
    90,711.22/125,184.05 = 54,907.70/x
  3. Step 3: Cross multiply
    90,711.22x = 125,184.05 × 54,907.70
  4. Step 4: Simplify right side
    90,711.22x = 6,873,568,262.19
  5. Step 5: Solve for x
    x = 6,873,568,262.19/90,711.22
  6. Step 6: Final answer
    x = 75,774.18

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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.