Home / 72,208.28-108,278.23-42,231.19

Finding the Fourth Proportional to 72,208.28, 108,278.23 and 42,231.19

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Solution

The fourth proportional to 72,208.28, 108,278.23 and 42,231.19 is: 63,326.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,208.28 : 108,278.23 = 42,231.19 : x
  2. Step 2: Convert to fraction form
    72,208.28/108,278.23 = 42,231.19/x
  3. Step 3: Cross multiply
    72,208.28x = 108,278.23 × 42,231.19
  4. Step 4: Simplify right side
    72,208.28x = 4,572,718,127.72
  5. Step 5: Solve for x
    x = 4,572,718,127.72/72,208.28
  6. Step 6: Final answer
    x = 63,326.79

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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.