Home / 80,538.48-120,798.33-21,378.75

Finding the Fourth Proportional to 80,538.48, 120,798.33 and 21,378.75

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Solution

The fourth proportional to 80,538.48, 120,798.33 and 21,378.75 is: 32,065.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,538.48 : 120,798.33 = 21,378.75 : x
  2. Step 2: Convert to fraction form
    80,538.48/120,798.33 = 21,378.75/x
  3. Step 3: Cross multiply
    80,538.48x = 120,798.33 × 21,378.75
  4. Step 4: Simplify right side
    80,538.48x = 2,582,517,297.49
  5. Step 5: Solve for x
    x = 2,582,517,297.49/80,538.48
  6. Step 6: Final answer
    x = 32,065.63

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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.