Home / 71,474.38-98,635.09-39,643.35

Finding the Fourth Proportional to 71,474.38, 98,635.09 and 39,643.35

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Solution

The fourth proportional to 71,474.38, 98,635.09 and 39,643.35 is: 54,708.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,474.38 : 98,635.09 = 39,643.35 : x
  2. Step 2: Convert to fraction form
    71,474.38/98,635.09 = 39,643.35/x
  3. Step 3: Cross multiply
    71,474.38x = 98,635.09 × 39,643.35
  4. Step 4: Simplify right side
    71,474.38x = 3,910,225,395.15
  5. Step 5: Solve for x
    x = 3,910,225,395.15/71,474.38
  6. Step 6: Final answer
    x = 54,708.07

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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.