Home / 71,819.12-99,135.96-51,687.92

Finding the Fourth Proportional to 71,819.12, 99,135.96 and 51,687.92

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Solution

The fourth proportional to 71,819.12, 99,135.96 and 51,687.92 is: 71,347.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,819.12 : 99,135.96 = 51,687.92 : x
  2. Step 2: Convert to fraction form
    71,819.12/99,135.96 = 51,687.92/x
  3. Step 3: Cross multiply
    71,819.12x = 99,135.96 × 51,687.92
  4. Step 4: Simplify right side
    71,819.12x = 5,124,131,569.60
  5. Step 5: Solve for x
    x = 5,124,131,569.60/71,819.12
  6. Step 6: Final answer
    x = 71,347.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.