Home / 71,519.68-98,698.26-39,689.92

Finding the Fourth Proportional to 71,519.68, 98,698.26 and 39,689.92

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Solution

The fourth proportional to 71,519.68, 98,698.26 and 39,689.92 is: 54,772.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,519.68 : 98,698.26 = 39,689.92 : x
  2. Step 2: Convert to fraction form
    71,519.68/98,698.26 = 39,689.92/x
  3. Step 3: Cross multiply
    71,519.68x = 98,698.26 × 39,689.92
  4. Step 4: Simplify right side
    71,519.68x = 3,917,326,043.54
  5. Step 5: Solve for x
    x = 3,917,326,043.54/71,519.68
  6. Step 6: Final answer
    x = 54,772.70

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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.