Home / 72,211.28-108,282.73-42,234.19

Finding the Fourth Proportional to 72,211.28, 108,282.73 and 42,234.19

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Solution

The fourth proportional to 72,211.28, 108,282.73 and 42,234.19 is: 63,331.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,211.28 : 108,282.73 = 42,234.19 : x
  2. Step 2: Convert to fraction form
    72,211.28/108,282.73 = 42,234.19/x
  3. Step 3: Cross multiply
    72,211.28x = 108,282.73 × 42,234.19
  4. Step 4: Simplify right side
    72,211.28x = 4,573,233,392.54
  5. Step 5: Solve for x
    x = 4,573,233,392.54/72,211.28
  6. Step 6: Final answer
    x = 63,331.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.