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Finding the Fourth Proportional to 71,453.88, 107,184.87 and 21,540.87

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Solution

The fourth proportional to 71,453.88, 107,184.87 and 21,540.87 is: 32,312.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,453.88 : 107,184.87 = 21,540.87 : x
  2. Step 2: Convert to fraction form
    71,453.88/107,184.87 = 21,540.87/x
  3. Step 3: Cross multiply
    71,453.88x = 107,184.87 × 21,540.87
  4. Step 4: Simplify right side
    71,453.88x = 2,308,855,350.64
  5. Step 5: Solve for x
    x = 2,308,855,350.64/71,453.88
  6. Step 6: Final answer
    x = 32,312.53

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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.