Home / 71,474.12-98,639.52-39,649.04

Finding the Fourth Proportional to 71,474.12, 98,639.52 and 39,649.04

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Solution

The fourth proportional to 71,474.12, 98,639.52 and 39,649.04 is: 54,718.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,474.12 : 98,639.52 = 39,649.04 : x
  2. Step 2: Convert to fraction form
    71,474.12/98,639.52 = 39,649.04/x
  3. Step 3: Cross multiply
    71,474.12x = 98,639.52 × 39,649.04
  4. Step 4: Simplify right side
    71,474.12x = 3,910,962,274.06
  5. Step 5: Solve for x
    x = 3,910,962,274.06/71,474.12
  6. Step 6: Final answer
    x = 54,718.58

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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.