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Finding the Fourth Proportional to 75,517.40, 113,405.70 and 40,525.40

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Solution

The fourth proportional to 75,517.40, 113,405.70 and 40,525.40 is: 60,857.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,517.40 : 113,405.70 = 40,525.40 : x
  2. Step 2: Convert to fraction form
    75,517.40/113,405.70 = 40,525.40/x
  3. Step 3: Cross multiply
    75,517.40x = 113,405.70 × 40,525.40
  4. Step 4: Simplify right side
    75,517.40x = 4,595,811,354.78
  5. Step 5: Solve for x
    x = 4,595,811,354.78/75,517.40
  6. Step 6: Final answer
    x = 60,857.65

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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.