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Finding the Fourth Proportional to 72,235.26, 108,262.64 and 34,788.38

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Solution

The fourth proportional to 72,235.26, 108,262.64 and 34,788.38 is: 52,139.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,235.26 : 108,262.64 = 34,788.38 : x
  2. Step 2: Convert to fraction form
    72,235.26/108,262.64 = 34,788.38/x
  3. Step 3: Cross multiply
    72,235.26x = 108,262.64 × 34,788.38
  4. Step 4: Simplify right side
    72,235.26x = 3,766,281,405.78
  5. Step 5: Solve for x
    x = 3,766,281,405.78/72,235.26
  6. Step 6: Final answer
    x = 52,139.10

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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.