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Finding the Fourth Proportional to 86,472.40, 129,709.08 and 24,143.44

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Solution

The fourth proportional to 86,472.40, 129,709.08 and 24,143.44 is: 36,215.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,472.40 : 129,709.08 = 24,143.44 : x
  2. Step 2: Convert to fraction form
    86,472.40/129,709.08 = 24,143.44/x
  3. Step 3: Cross multiply
    86,472.40x = 129,709.08 × 24,143.44
  4. Step 4: Simplify right side
    86,472.40x = 3,131,623,390.44
  5. Step 5: Solve for x
    x = 3,131,623,390.44/86,472.40
  6. Step 6: Final answer
    x = 36,215.29

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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.