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Finding the Fourth Proportional to 70,757.62, 106,074.51 and 28,611.70

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Solution

The fourth proportional to 70,757.62, 106,074.51 and 28,611.70 is: 42,892.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,757.62 : 106,074.51 = 28,611.70 : x
  2. Step 2: Convert to fraction form
    70,757.62/106,074.51 = 28,611.70/x
  3. Step 3: Cross multiply
    70,757.62x = 106,074.51 × 28,611.70
  4. Step 4: Simplify right side
    70,757.62x = 3,034,972,057.77
  5. Step 5: Solve for x
    x = 3,034,972,057.77/70,757.62
  6. Step 6: Final answer
    x = 42,892.51

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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.