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Finding the Fourth Proportional to 71,461.82, 107,197.60 and 21,537.48

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Solution

The fourth proportional to 71,461.82, 107,197.60 and 21,537.48 is: 32,307.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,461.82 : 107,197.60 = 21,537.48 : x
  2. Step 2: Convert to fraction form
    71,461.82/107,197.60 = 21,537.48/x
  3. Step 3: Cross multiply
    71,461.82x = 107,197.60 × 21,537.48
  4. Step 4: Simplify right side
    71,461.82x = 2,308,766,166.05
  5. Step 5: Solve for x
    x = 2,308,766,166.05/71,461.82
  6. Step 6: Final answer
    x = 32,307.69

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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.