Home / 72,238.20-108,365.40-22,317.90

Finding the Fourth Proportional to 72,238.20, 108,365.40 and 22,317.90

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Solution

The fourth proportional to 72,238.20, 108,365.40 and 22,317.90 is: 33,479.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,238.20 : 108,365.40 = 22,317.90 : x
  2. Step 2: Convert to fraction form
    72,238.20/108,365.40 = 22,317.90/x
  3. Step 3: Cross multiply
    72,238.20x = 108,365.40 × 22,317.90
  4. Step 4: Simplify right side
    72,238.20x = 2,418,488,160.66
  5. Step 5: Solve for x
    x = 2,418,488,160.66/72,238.20
  6. Step 6: Final answer
    x = 33,479.35

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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.