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Finding the Fourth Proportional to 72,322.38, 108,495.27 and 22,390.74

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Solution

The fourth proportional to 72,322.38, 108,495.27 and 22,390.74 is: 33,589.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,322.38 : 108,495.27 = 22,390.74 : x
  2. Step 2: Convert to fraction form
    72,322.38/108,495.27 = 22,390.74/x
  3. Step 3: Cross multiply
    72,322.38x = 108,495.27 × 22,390.74
  4. Step 4: Simplify right side
    72,322.38x = 2,429,289,381.80
  5. Step 5: Solve for x
    x = 2,429,289,381.80/72,322.38
  6. Step 6: Final answer
    x = 33,589.73

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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.