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Finding the Fourth Proportional to 80,488.01, 120,704.67 and 27,885.21

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Solution

The fourth proportional to 80,488.01, 120,704.67 and 27,885.21 is: 41,818.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,488.01 : 120,704.67 = 27,885.21 : x
  2. Step 2: Convert to fraction form
    80,488.01/120,704.67 = 27,885.21/x
  3. Step 3: Cross multiply
    80,488.01x = 120,704.67 × 27,885.21
  4. Step 4: Simplify right side
    80,488.01x = 3,365,875,070.93
  5. Step 5: Solve for x
    x = 3,365,875,070.93/80,488.01
  6. Step 6: Final answer
    x = 41,818.34

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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.