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Finding the Fourth Proportional to 72,315.41, 108,471.29 and 22,393.49

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Solution

The fourth proportional to 72,315.41, 108,471.29 and 22,393.49 is: 33,589.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,315.41 : 108,471.29 = 22,393.49 : x
  2. Step 2: Convert to fraction form
    72,315.41/108,471.29 = 22,393.49/x
  3. Step 3: Cross multiply
    72,315.41x = 108,471.29 × 22,393.49
  4. Step 4: Simplify right side
    72,315.41x = 2,429,050,093.58
  5. Step 5: Solve for x
    x = 2,429,050,093.58/72,315.41
  6. Step 6: Final answer
    x = 33,589.66

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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.