Home / 75,877.18-113,591.59-72,629.48

Finding the Fourth Proportional to 75,877.18, 113,591.59 and 72,629.48

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Solution

The fourth proportional to 75,877.18, 113,591.59 and 72,629.48 is: 108,729.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,877.18 : 113,591.59 = 72,629.48 : x
  2. Step 2: Convert to fraction form
    75,877.18/113,591.59 = 72,629.48/x
  3. Step 3: Cross multiply
    75,877.18x = 113,591.59 × 72,629.48
  4. Step 4: Simplify right side
    75,877.18x = 8,250,098,216.48
  5. Step 5: Solve for x
    x = 8,250,098,216.48/75,877.18
  6. Step 6: Final answer
    x = 108,729.64

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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.