Home / 75,340.40-113,122.20-42,126.80

Finding the Fourth Proportional to 75,340.40, 113,122.20 and 42,126.80

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Solution

The fourth proportional to 75,340.40, 113,122.20 and 42,126.80 is: 63,252.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,340.40 : 113,122.20 = 42,126.80 : x
  2. Step 2: Convert to fraction form
    75,340.40/113,122.20 = 42,126.80/x
  3. Step 3: Cross multiply
    75,340.40x = 113,122.20 × 42,126.80
  4. Step 4: Simplify right side
    75,340.40x = 4,765,476,294.96
  5. Step 5: Solve for x
    x = 4,765,476,294.96/75,340.40
  6. Step 6: Final answer
    x = 63,252.60

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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.