Home / 71,787.26-99,064.69-39,959.12

Finding the Fourth Proportional to 71,787.26, 99,064.69 and 39,959.12

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Solution

The fourth proportional to 71,787.26, 99,064.69 and 39,959.12 is: 55,142.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,787.26 : 99,064.69 = 39,959.12 : x
  2. Step 2: Convert to fraction form
    71,787.26/99,064.69 = 39,959.12/x
  3. Step 3: Cross multiply
    71,787.26x = 99,064.69 × 39,959.12
  4. Step 4: Simplify right side
    71,787.26x = 3,958,537,983.24
  5. Step 5: Solve for x
    x = 3,958,537,983.24/71,787.26
  6. Step 6: Final answer
    x = 55,142.62

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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.