Home / 84,579.35-126,819.82-31,992.93

Finding the Fourth Proportional to 84,579.35, 126,819.82 and 31,992.93

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Solution

The fourth proportional to 84,579.35, 126,819.82 and 31,992.93 is: 47,970.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,579.35 : 126,819.82 = 31,992.93 : x
  2. Step 2: Convert to fraction form
    84,579.35/126,819.82 = 31,992.93/x
  3. Step 3: Cross multiply
    84,579.35x = 126,819.82 × 31,992.93
  4. Step 4: Simplify right side
    84,579.35x = 4,057,337,463.91
  5. Step 5: Solve for x
    x = 4,057,337,463.91/84,579.35
  6. Step 6: Final answer
    x = 47,970.78

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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.