Home / 75,568.40-113,280.60-28,170.80

Finding the Fourth Proportional to 75,568.40, 113,280.60 and 28,170.80

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Solution

The fourth proportional to 75,568.40, 113,280.60 and 28,170.80 is: 42,229.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,568.40 : 113,280.60 = 28,170.80 : x
  2. Step 2: Convert to fraction form
    75,568.40/113,280.60 = 28,170.80/x
  3. Step 3: Cross multiply
    75,568.40x = 113,280.60 × 28,170.80
  4. Step 4: Simplify right side
    75,568.40x = 3,191,205,126.48
  5. Step 5: Solve for x
    x = 3,191,205,126.48/75,568.40
  6. Step 6: Final answer
    x = 42,229.36

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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.