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Finding the Fourth Proportional to 54,011.88, 80,860.92 and 31,453.78

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Solution

The fourth proportional to 54,011.88, 80,860.92 and 31,453.78 is: 47,089.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,011.88 : 80,860.92 = 31,453.78 : x
  2. Step 2: Convert to fraction form
    54,011.88/80,860.92 = 31,453.78/x
  3. Step 3: Cross multiply
    54,011.88x = 80,860.92 × 31,453.78
  4. Step 4: Simplify right side
    54,011.88x = 2,543,381,588.28
  5. Step 5: Solve for x
    x = 2,543,381,588.28/54,011.88
  6. Step 6: Final answer
    x = 47,089.30

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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.