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Finding the Fourth Proportional to 80,842.80, 111,560.34 and 45,031.08

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Solution

The fourth proportional to 80,842.80, 111,560.34 and 45,031.08 is: 62,141.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,842.80 : 111,560.34 = 45,031.08 : x
  2. Step 2: Convert to fraction form
    80,842.80/111,560.34 = 45,031.08/x
  3. Step 3: Cross multiply
    80,842.80x = 111,560.34 × 45,031.08
  4. Step 4: Simplify right side
    80,842.80x = 5,023,682,595.37
  5. Step 5: Solve for x
    x = 5,023,682,595.37/80,842.80
  6. Step 6: Final answer
    x = 62,141.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.