Home / 78,948.68-108,947.87-43,137.92

Finding the Fourth Proportional to 78,948.68, 108,947.87 and 43,137.92

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Solution

The fourth proportional to 78,948.68, 108,947.87 and 43,137.92 is: 59,529.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,948.68 : 108,947.87 = 43,137.92 : x
  2. Step 2: Convert to fraction form
    78,948.68/108,947.87 = 43,137.92/x
  3. Step 3: Cross multiply
    78,948.68x = 108,947.87 × 43,137.92
  4. Step 4: Simplify right side
    78,948.68x = 4,699,783,739.80
  5. Step 5: Solve for x
    x = 4,699,783,739.80/78,948.68
  6. Step 6: Final answer
    x = 59,529.61

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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.