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Finding the Fourth Proportional to 71,889.97, 107,670.93 and 63,481

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Solution

The fourth proportional to 71,889.97, 107,670.93 and 63,481 is: 95,076.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,889.97 : 107,670.93 = 63,481 : x
  2. Step 2: Convert to fraction form
    71,889.97/107,670.93 = 63,481/x
  3. Step 3: Cross multiply
    71,889.97x = 107,670.93 × 63,481
  4. Step 4: Simplify right side
    71,889.97x = 6,835,058,307.33
  5. Step 5: Solve for x
    x = 6,835,058,307.33/71,889.97
  6. Step 6: Final answer
    x = 95,076.66

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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.