Home / 76,733.65-115,208.16-39,320.61

Finding the Fourth Proportional to 76,733.65, 115,208.16 and 39,320.61

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Solution

The fourth proportional to 76,733.65, 115,208.16 and 39,320.61 is: 59,036.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,733.65 : 115,208.16 = 39,320.61 : x
  2. Step 2: Convert to fraction form
    76,733.65/115,208.16 = 39,320.61/x
  3. Step 3: Cross multiply
    76,733.65x = 115,208.16 × 39,320.61
  4. Step 4: Simplify right side
    76,733.65x = 4,530,055,128.18
  5. Step 5: Solve for x
    x = 4,530,055,128.18/76,733.65
  6. Step 6: Final answer
    x = 59,036.10

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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.