Home / 76,690.90-115,013.65-34,546.62

Finding the Fourth Proportional to 76,690.90, 115,013.65 and 34,546.62

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Solution

The fourth proportional to 76,690.90, 115,013.65 and 34,546.62 is: 51,809.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,690.90 : 115,013.65 = 34,546.62 : x
  2. Step 2: Convert to fraction form
    76,690.90/115,013.65 = 34,546.62/x
  3. Step 3: Cross multiply
    76,690.90x = 115,013.65 × 34,546.62
  4. Step 4: Simplify right side
    76,690.90x = 3,973,332,861.36
  5. Step 5: Solve for x
    x = 3,973,332,861.36/76,690.90
  6. Step 6: Final answer
    x = 51,809.70

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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.