Home / 72,169.53-99,589.94-39,902.28

Finding the Fourth Proportional to 72,169.53, 99,589.94 and 39,902.28

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Solution

The fourth proportional to 72,169.53, 99,589.94 and 39,902.28 is: 55,062.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,169.53 : 99,589.94 = 39,902.28 : x
  2. Step 2: Convert to fraction form
    72,169.53/99,589.94 = 39,902.28/x
  3. Step 3: Cross multiply
    72,169.53x = 99,589.94 × 39,902.28
  4. Step 4: Simplify right side
    72,169.53x = 3,973,865,471.55
  5. Step 5: Solve for x
    x = 3,973,865,471.55/72,169.53
  6. Step 6: Final answer
    x = 55,062.93

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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.