Home / 80,011.18-120,031.35-27,425.98

Finding the Fourth Proportional to 80,011.18, 120,031.35 and 27,425.98

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Solution

The fourth proportional to 80,011.18, 120,031.35 and 27,425.98 is: 41,143.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,011.18 : 120,031.35 = 27,425.98 : x
  2. Step 2: Convert to fraction form
    80,011.18/120,031.35 = 27,425.98/x
  3. Step 3: Cross multiply
    80,011.18x = 120,031.35 × 27,425.98
  4. Step 4: Simplify right side
    80,011.18x = 3,291,977,404.47
  5. Step 5: Solve for x
    x = 3,291,977,404.47/80,011.18
  6. Step 6: Final answer
    x = 41,143.97

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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.