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Finding the Fourth Proportional to 70,868.97, 106,301.57 and 28,737.77

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Solution

The fourth proportional to 70,868.97, 106,301.57 and 28,737.77 is: 43,105.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,868.97 : 106,301.57 = 28,737.77 : x
  2. Step 2: Convert to fraction form
    70,868.97/106,301.57 = 28,737.77/x
  3. Step 3: Cross multiply
    70,868.97x = 106,301.57 × 28,737.77
  4. Step 4: Simplify right side
    70,868.97x = 3,054,869,394.10
  5. Step 5: Solve for x
    x = 3,054,869,394.10/70,868.97
  6. Step 6: Final answer
    x = 43,105.88

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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.