Home / 72,381.11-108,534.63-30,249.71

Finding the Fourth Proportional to 72,381.11, 108,534.63 and 30,249.71

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Solution

The fourth proportional to 72,381.11, 108,534.63 and 30,249.71 is: 45,359.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,381.11 : 108,534.63 = 30,249.71 : x
  2. Step 2: Convert to fraction form
    72,381.11/108,534.63 = 30,249.71/x
  3. Step 3: Cross multiply
    72,381.11x = 108,534.63 × 30,249.71
  4. Step 4: Simplify right side
    72,381.11x = 3,283,140,539.78
  5. Step 5: Solve for x
    x = 3,283,140,539.78/72,381.11
  6. Step 6: Final answer
    x = 45,359.08

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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.