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Finding the Fourth Proportional to 67,981.20, 101,872.20 and 60,961.20

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Solution

The fourth proportional to 67,981.20, 101,872.20 and 60,961.20 is: 91,352.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,981.20 : 101,872.20 = 60,961.20 : x
  2. Step 2: Convert to fraction form
    67,981.20/101,872.20 = 60,961.20/x
  3. Step 3: Cross multiply
    67,981.20x = 101,872.20 × 60,961.20
  4. Step 4: Simplify right side
    67,981.20x = 6,210,251,558.64
  5. Step 5: Solve for x
    x = 6,210,251,558.64/67,981.20
  6. Step 6: Final answer
    x = 91,352.49

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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.