Home / 76,758.52-115,161.05-39,345.12

Finding the Fourth Proportional to 76,758.52, 115,161.05 and 39,345.12

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Solution

The fourth proportional to 76,758.52, 115,161.05 and 39,345.12 is: 59,029.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,758.52 : 115,161.05 = 39,345.12 : x
  2. Step 2: Convert to fraction form
    76,758.52/115,161.05 = 39,345.12/x
  3. Step 3: Cross multiply
    76,758.52x = 115,161.05 × 39,345.12
  4. Step 4: Simplify right side
    76,758.52x = 4,531,025,331.58
  5. Step 5: Solve for x
    x = 4,531,025,331.58/76,758.52
  6. Step 6: Final answer
    x = 59,029.61

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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.