Home / 71,475.57-98,634.78-39,643.83

Finding the Fourth Proportional to 71,475.57, 98,634.78 and 39,643.83

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Solution

The fourth proportional to 71,475.57, 98,634.78 and 39,643.83 is: 54,707.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,475.57 : 98,634.78 = 39,643.83 : x
  2. Step 2: Convert to fraction form
    71,475.57/98,634.78 = 39,643.83/x
  3. Step 3: Cross multiply
    71,475.57x = 98,634.78 × 39,643.83
  4. Step 4: Simplify right side
    71,475.57x = 3,910,260,450.41
  5. Step 5: Solve for x
    x = 3,910,260,450.41/71,475.57
  6. Step 6: Final answer
    x = 54,707.65

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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.