Home / 71,521.26-98,694.63-39,690.15

Finding the Fourth Proportional to 71,521.26, 98,694.63 and 39,690.15

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Solution

The fourth proportional to 71,521.26, 98,694.63 and 39,690.15 is: 54,769.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,521.26 : 98,694.63 = 39,690.15 : x
  2. Step 2: Convert to fraction form
    71,521.26/98,694.63 = 39,690.15/x
  3. Step 3: Cross multiply
    71,521.26x = 98,694.63 × 39,690.15
  4. Step 4: Simplify right side
    71,521.26x = 3,917,204,668.89
  5. Step 5: Solve for x
    x = 3,917,204,668.89/71,521.26
  6. Step 6: Final answer
    x = 54,769.79

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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.