Home / 80,419.40-111,049.28-50,256.25

Finding the Fourth Proportional to 80,419.40, 111,049.28 and 50,256.25

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Solution

The fourth proportional to 80,419.40, 111,049.28 and 50,256.25 is: 69,397.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,419.40 : 111,049.28 = 50,256.25 : x
  2. Step 2: Convert to fraction form
    80,419.40/111,049.28 = 50,256.25/x
  3. Step 3: Cross multiply
    80,419.40x = 111,049.28 × 50,256.25
  4. Step 4: Simplify right side
    80,419.40x = 5,580,920,037.56
  5. Step 5: Solve for x
    x = 5,580,920,037.56/80,419.40
  6. Step 6: Final answer
    x = 69,397.68

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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.