Home / 76,931.91-115,419.06-27,005.42

Finding the Fourth Proportional to 76,931.91, 115,419.06 and 27,005.42

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Solution

The fourth proportional to 76,931.91, 115,419.06 and 27,005.42 is: 40,515.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,931.91 : 115,419.06 = 27,005.42 : x
  2. Step 2: Convert to fraction form
    76,931.91/115,419.06 = 27,005.42/x
  3. Step 3: Cross multiply
    76,931.91x = 115,419.06 × 27,005.42
  4. Step 4: Simplify right side
    76,931.91x = 3,116,940,479.85
  5. Step 5: Solve for x
    x = 3,116,940,479.85/76,931.91
  6. Step 6: Final answer
    x = 40,515.57

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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.