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Finding the Fourth Proportional to 86,648.44, 129,977.28 and 27,488.84

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Solution

The fourth proportional to 86,648.44, 129,977.28 and 27,488.84 is: 41,234.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,648.44 : 129,977.28 = 27,488.84 : x
  2. Step 2: Convert to fraction form
    86,648.44/129,977.28 = 27,488.84/x
  3. Step 3: Cross multiply
    86,648.44x = 129,977.28 × 27,488.84
  4. Step 4: Simplify right side
    86,648.44x = 3,572,924,653.56
  5. Step 5: Solve for x
    x = 3,572,924,653.56/86,648.44
  6. Step 6: Final answer
    x = 41,234.73

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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.