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Finding the Fourth Proportional to 72,003.60, 108,005.40 and 22,083.30

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Solution

The fourth proportional to 72,003.60, 108,005.40 and 22,083.30 is: 33,124.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,003.60 : 108,005.40 = 22,083.30 : x
  2. Step 2: Convert to fraction form
    72,003.60/108,005.40 = 22,083.30/x
  3. Step 3: Cross multiply
    72,003.60x = 108,005.40 × 22,083.30
  4. Step 4: Simplify right side
    72,003.60x = 2,385,115,649.82
  5. Step 5: Solve for x
    x = 2,385,115,649.82/72,003.60
  6. Step 6: Final answer
    x = 33,124.95

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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.