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Finding the Fourth Proportional to 92,011.20, 138,049.20 and 39,436.80

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Solution

The fourth proportional to 92,011.20, 138,049.20 and 39,436.80 is: 59,169.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,011.20 : 138,049.20 = 39,436.80 : x
  2. Step 2: Convert to fraction form
    92,011.20/138,049.20 = 39,436.80/x
  3. Step 3: Cross multiply
    92,011.20x = 138,049.20 × 39,436.80
  4. Step 4: Simplify right side
    92,011.20x = 5,444,218,690.56
  5. Step 5: Solve for x
    x = 5,444,218,690.56/92,011.20
  6. Step 6: Final answer
    x = 59,169.09

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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.