Home / 76,715.90-115,073.63-34,546.61

Finding the Fourth Proportional to 76,715.90, 115,073.63 and 34,546.61

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Solution

The fourth proportional to 76,715.90, 115,073.63 and 34,546.61 is: 51,819.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,715.90 : 115,073.63 = 34,546.61 : x
  2. Step 2: Convert to fraction form
    76,715.90/115,073.63 = 34,546.61/x
  3. Step 3: Cross multiply
    76,715.90x = 115,073.63 × 34,546.61
  4. Step 4: Simplify right side
    76,715.90x = 3,975,403,931.85
  5. Step 5: Solve for x
    x = 3,975,403,931.85/76,715.90
  6. Step 6: Final answer
    x = 51,819.82

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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.