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Finding the Fourth Proportional to 72,348.58, 108,538.26 and 22,429.90

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Solution

The fourth proportional to 72,348.58, 108,538.26 and 22,429.90 is: 33,649.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,348.58 : 108,538.26 = 22,429.90 : x
  2. Step 2: Convert to fraction form
    72,348.58/108,538.26 = 22,429.90/x
  3. Step 3: Cross multiply
    72,348.58x = 108,538.26 × 22,429.90
  4. Step 4: Simplify right side
    72,348.58x = 2,434,502,317.97
  5. Step 5: Solve for x
    x = 2,434,502,317.97/72,348.58
  6. Step 6: Final answer
    x = 33,649.62

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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.