Home / 78,944.30-108,939.92-43,135.55

Finding the Fourth Proportional to 78,944.30, 108,939.92 and 43,135.55

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Solution

The fourth proportional to 78,944.30, 108,939.92 and 43,135.55 is: 59,525.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,944.30 : 108,939.92 = 43,135.55 : x
  2. Step 2: Convert to fraction form
    78,944.30/108,939.92 = 43,135.55/x
  3. Step 3: Cross multiply
    78,944.30x = 108,939.92 × 43,135.55
  4. Step 4: Simplify right side
    78,944.30x = 4,699,183,366.16
  5. Step 5: Solve for x
    x = 4,699,183,366.16/78,944.30
  6. Step 6: Final answer
    x = 59,525.30

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1.5x scale

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.