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Finding the Fourth Proportional to 71,959.32, 99,461.52 and 63,396

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Solution

The fourth proportional to 71,959.32, 99,461.52 and 63,396 is: 87,625.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,959.32 : 99,461.52 = 63,396 : x
  2. Step 2: Convert to fraction form
    71,959.32/99,461.52 = 63,396/x
  3. Step 3: Cross multiply
    71,959.32x = 99,461.52 × 63,396
  4. Step 4: Simplify right side
    71,959.32x = 6,305,462,521.92
  5. Step 5: Solve for x
    x = 6,305,462,521.92/71,959.32
  6. Step 6: Final answer
    x = 87,625.38

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.