Home / 72,203.46-99,640.42-40,372.35

Finding the Fourth Proportional to 72,203.46, 99,640.42 and 40,372.35

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Solution

The fourth proportional to 72,203.46, 99,640.42 and 40,372.35 is: 55,713.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,203.46 : 99,640.42 = 40,372.35 : x
  2. Step 2: Convert to fraction form
    72,203.46/99,640.42 = 40,372.35/x
  3. Step 3: Cross multiply
    72,203.46x = 99,640.42 × 40,372.35
  4. Step 4: Simplify right side
    72,203.46x = 4,022,717,910.39
  5. Step 5: Solve for x
    x = 4,022,717,910.39/72,203.46
  6. Step 6: Final answer
    x = 55,713.64

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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.