Home / 76,863.12-115,329.71-39,449.47

Finding the Fourth Proportional to 76,863.12, 115,329.71 and 39,449.47

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Solution

The fourth proportional to 76,863.12, 115,329.71 and 39,449.47 is: 59,192.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,863.12 : 115,329.71 = 39,449.47 : x
  2. Step 2: Convert to fraction form
    76,863.12/115,329.71 = 39,449.47/x
  3. Step 3: Cross multiply
    76,863.12x = 115,329.71 × 39,449.47
  4. Step 4: Simplify right side
    76,863.12x = 4,549,695,456.73
  5. Step 5: Solve for x
    x = 4,549,695,456.73/76,863.12
  6. Step 6: Final answer
    x = 59,192.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.