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Finding the Fourth Proportional to 67,377.70, 100,870.86 and 39,211.84

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Solution

The fourth proportional to 67,377.70, 100,870.86 and 39,211.84 is: 58,703.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,377.70 : 100,870.86 = 39,211.84 : x
  2. Step 2: Convert to fraction form
    67,377.70/100,870.86 = 39,211.84/x
  3. Step 3: Cross multiply
    67,377.70x = 100,870.86 × 39,211.84
  4. Step 4: Simplify right side
    67,377.70x = 3,955,332,022.98
  5. Step 5: Solve for x
    x = 3,955,332,022.98/67,377.70
  6. Step 6: Final answer
    x = 58,703.87

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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.