Home / 75,643.20-113,489.10-50,711.40

Finding the Fourth Proportional to 75,643.20, 113,489.10 and 50,711.40

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Solution

The fourth proportional to 75,643.20, 113,489.10 and 50,711.40 is: 76,083.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,643.20 : 113,489.10 = 50,711.40 : x
  2. Step 2: Convert to fraction form
    75,643.20/113,489.10 = 50,711.40/x
  3. Step 3: Cross multiply
    75,643.20x = 113,489.10 × 50,711.40
  4. Step 4: Simplify right side
    75,643.20x = 5,755,191,145.74
  5. Step 5: Solve for x
    x = 5,755,191,145.74/75,643.20
  6. Step 6: Final answer
    x = 76,083.39

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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.