Home / 72,380.25-99,885.06-40,116.33

Finding the Fourth Proportional to 72,380.25, 99,885.06 and 40,116.33

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Solution

The fourth proportional to 72,380.25, 99,885.06 and 40,116.33 is: 55,360.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,380.25 : 99,885.06 = 40,116.33 : x
  2. Step 2: Convert to fraction form
    72,380.25/99,885.06 = 40,116.33/x
  3. Step 3: Cross multiply
    72,380.25x = 99,885.06 × 40,116.33
  4. Step 4: Simplify right side
    72,380.25x = 4,007,022,029.03
  5. Step 5: Solve for x
    x = 4,007,022,029.03/72,380.25
  6. Step 6: Final answer
    x = 55,360.71

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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.