Home / 75,591.20-113,386.80-67,426.40

Finding the Fourth Proportional to 75,591.20, 113,386.80 and 67,426.40

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Solution

The fourth proportional to 75,591.20, 113,386.80 and 67,426.40 is: 101,139.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,591.20 : 113,386.80 = 67,426.40 : x
  2. Step 2: Convert to fraction form
    75,591.20/113,386.80 = 67,426.40/x
  3. Step 3: Cross multiply
    75,591.20x = 113,386.80 × 67,426.40
  4. Step 4: Simplify right side
    75,591.20x = 7,645,263,731.52
  5. Step 5: Solve for x
    x = 7,645,263,731.52/75,591.20
  6. Step 6: Final answer
    x = 101,139.60

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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.