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Finding the Fourth Proportional to 72,360.40, 108,556.80 and 22,442.80

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Solution

The fourth proportional to 72,360.40, 108,556.80 and 22,442.80 is: 33,669.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,360.40 : 108,556.80 = 22,442.80 : x
  2. Step 2: Convert to fraction form
    72,360.40/108,556.80 = 22,442.80/x
  3. Step 3: Cross multiply
    72,360.40x = 108,556.80 × 22,442.80
  4. Step 4: Simplify right side
    72,360.40x = 2,436,318,551.04
  5. Step 5: Solve for x
    x = 2,436,318,551.04/72,360.40
  6. Step 6: Final answer
    x = 33,669.22

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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.