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Finding the Fourth Proportional to 67,660.90, 101,515.65 and 28,230.10

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Solution

The fourth proportional to 67,660.90, 101,515.65 and 28,230.10 is: 42,355.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,660.90 : 101,515.65 = 28,230.10 : x
  2. Step 2: Convert to fraction form
    67,660.90/101,515.65 = 28,230.10/x
  3. Step 3: Cross multiply
    67,660.90x = 101,515.65 × 28,230.10
  4. Step 4: Simplify right side
    67,660.90x = 2,865,796,951.07
  5. Step 5: Solve for x
    x = 2,865,796,951.07/67,660.90
  6. Step 6: Final answer
    x = 42,355.29

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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.