Home / 75,891.20-113,930.40-47,811.20

Finding the Fourth Proportional to 75,891.20, 113,930.40 and 47,811.20

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Solution

The fourth proportional to 75,891.20, 113,930.40 and 47,811.20 is: 71,775.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,891.20 : 113,930.40 = 47,811.20 : x
  2. Step 2: Convert to fraction form
    75,891.20/113,930.40 = 47,811.20/x
  3. Step 3: Cross multiply
    75,891.20x = 113,930.40 × 47,811.20
  4. Step 4: Simplify right side
    75,891.20x = 5,447,149,140.48
  5. Step 5: Solve for x
    x = 5,447,149,140.48/75,891.20
  6. Step 6: Final answer
    x = 71,775.77

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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.