Home / 67,410.20-101,115.30-66,535.40

Finding the Fourth Proportional to 67,410.20, 101,115.30 and 66,535.40

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Solution

The fourth proportional to 67,410.20, 101,115.30 and 66,535.40 is: 99,803.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,410.20 : 101,115.30 = 66,535.40 : x
  2. Step 2: Convert to fraction form
    67,410.20/101,115.30 = 66,535.40/x
  3. Step 3: Cross multiply
    67,410.20x = 101,115.30 × 66,535.40
  4. Step 4: Simplify right side
    67,410.20x = 6,727,746,931.62
  5. Step 5: Solve for x
    x = 6,727,746,931.62/67,410.20
  6. Step 6: Final answer
    x = 99,803.10

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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.