Home / 76,680.73-115,021.82-47,838.11

Finding the Fourth Proportional to 76,680.73, 115,021.82 and 47,838.11

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Solution

The fourth proportional to 76,680.73, 115,021.82 and 47,838.11 is: 71,757.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,680.73 : 115,021.82 = 47,838.11 : x
  2. Step 2: Convert to fraction form
    76,680.73/115,021.82 = 47,838.11/x
  3. Step 3: Cross multiply
    76,680.73x = 115,021.82 × 47,838.11
  4. Step 4: Simplify right side
    76,680.73x = 5,502,426,705.32
  5. Step 5: Solve for x
    x = 5,502,426,705.32/76,680.73
  6. Step 6: Final answer
    x = 71,757.62

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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.