Home / 75,680.20-113,520.30-63,870.40

Finding the Fourth Proportional to 75,680.20, 113,520.30 and 63,870.40

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Solution

The fourth proportional to 75,680.20, 113,520.30 and 63,870.40 is: 95,805.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,680.20 : 113,520.30 = 63,870.40 : x
  2. Step 2: Convert to fraction form
    75,680.20/113,520.30 = 63,870.40/x
  3. Step 3: Cross multiply
    75,680.20x = 113,520.30 × 63,870.40
  4. Step 4: Simplify right side
    75,680.20x = 7,250,586,969.12
  5. Step 5: Solve for x
    x = 7,250,586,969.12/75,680.20
  6. Step 6: Final answer
    x = 95,805.60

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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.