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Finding the Fourth Proportional to 53,296.80, 79,906.80 and 29,930.40

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Solution

The fourth proportional to 53,296.80, 79,906.80 and 29,930.40 is: 44,874.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,296.80 : 79,906.80 = 29,930.40 : x
  2. Step 2: Convert to fraction form
    53,296.80/79,906.80 = 29,930.40/x
  3. Step 3: Cross multiply
    53,296.80x = 79,906.80 × 29,930.40
  4. Step 4: Simplify right side
    53,296.80x = 2,391,642,486.72
  5. Step 5: Solve for x
    x = 2,391,642,486.72/53,296.80
  6. Step 6: Final answer
    x = 44,874.04

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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.