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Finding the Fourth Proportional to 86,204.52, 129,311.64 and 27,038.88

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Solution

The fourth proportional to 86,204.52, 129,311.64 and 27,038.88 is: 40,559.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,204.52 : 129,311.64 = 27,038.88 : x
  2. Step 2: Convert to fraction form
    86,204.52/129,311.64 = 27,038.88/x
  3. Step 3: Cross multiply
    86,204.52x = 129,311.64 × 27,038.88
  4. Step 4: Simplify right side
    86,204.52x = 3,496,441,916.56
  5. Step 5: Solve for x
    x = 3,496,441,916.56/86,204.52
  6. Step 6: Final answer
    x = 40,559.84

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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.