Home / 72,236.49-99,680.94-40,399.23

Finding the Fourth Proportional to 72,236.49, 99,680.94 and 40,399.23

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Solution

The fourth proportional to 72,236.49, 99,680.94 and 40,399.23 is: 55,747.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,236.49 : 99,680.94 = 40,399.23 : x
  2. Step 2: Convert to fraction form
    72,236.49/99,680.94 = 40,399.23/x
  3. Step 3: Cross multiply
    72,236.49x = 99,680.94 × 40,399.23
  4. Step 4: Simplify right side
    72,236.49x = 4,027,033,221.68
  5. Step 5: Solve for x
    x = 4,027,033,221.68/72,236.49
  6. Step 6: Final answer
    x = 55,747.91

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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.