Home / 76,788.16-115,134.72-29,986

Finding the Fourth Proportional to 76,788.16, 115,134.72 and 29,986

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Solution

The fourth proportional to 76,788.16, 115,134.72 and 29,986 is: 44,960.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,788.16 : 115,134.72 = 29,986 : x
  2. Step 2: Convert to fraction form
    76,788.16/115,134.72 = 29,986/x
  3. Step 3: Cross multiply
    76,788.16x = 115,134.72 × 29,986
  4. Step 4: Simplify right side
    76,788.16x = 3,452,429,713.92
  5. Step 5: Solve for x
    x = 3,452,429,713.92/76,788.16
  6. Step 6: Final answer
    x = 44,960.44

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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.