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Finding the Fourth Proportional to 90,196.80, 124,471.20 and 50,452.80

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Solution

The fourth proportional to 90,196.80, 124,471.20 and 50,452.80 is: 69,624.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,196.80 : 124,471.20 = 50,452.80 : x
  2. Step 2: Convert to fraction form
    90,196.80/124,471.20 = 50,452.80/x
  3. Step 3: Cross multiply
    90,196.80x = 124,471.20 × 50,452.80
  4. Step 4: Simplify right side
    90,196.80x = 6,279,920,559.36
  5. Step 5: Solve for x
    x = 6,279,920,559.36/90,196.80
  6. Step 6: Final answer
    x = 69,624.65

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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.