Home / 75,589.20-113,383.80-67,424.40

Finding the Fourth Proportional to 75,589.20, 113,383.80 and 67,424.40

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Solution

The fourth proportional to 75,589.20, 113,383.80 and 67,424.40 is: 101,136.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,589.20 : 113,383.80 = 67,424.40 : x
  2. Step 2: Convert to fraction form
    75,589.20/113,383.80 = 67,424.40/x
  3. Step 3: Cross multiply
    75,589.20x = 113,383.80 × 67,424.40
  4. Step 4: Simplify right side
    75,589.20x = 7,644,834,684.72
  5. Step 5: Solve for x
    x = 7,644,834,684.72/75,589.20
  6. Step 6: Final answer
    x = 101,136.60

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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.