Home / 75,687.40-113,531.10-57,972.70

Finding the Fourth Proportional to 75,687.40, 113,531.10 and 57,972.70

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Solution

The fourth proportional to 75,687.40, 113,531.10 and 57,972.70 is: 86,959.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,687.40 : 113,531.10 = 57,972.70 : x
  2. Step 2: Convert to fraction form
    75,687.40/113,531.10 = 57,972.70/x
  3. Step 3: Cross multiply
    75,687.40x = 113,531.10 × 57,972.70
  4. Step 4: Simplify right side
    75,687.40x = 6,581,704,400.97
  5. Step 5: Solve for x
    x = 6,581,704,400.97/75,687.40
  6. Step 6: Final answer
    x = 86,959.05

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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.