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Finding the Fourth Proportional to 72,815.22, 109,249.11 and 25,437.33

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Solution

The fourth proportional to 72,815.22, 109,249.11 and 25,437.33 is: 38,165.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,815.22 : 109,249.11 = 25,437.33 : x
  2. Step 2: Convert to fraction form
    72,815.22/109,249.11 = 25,437.33/x
  3. Step 3: Cross multiply
    72,815.22x = 109,249.11 × 25,437.33
  4. Step 4: Simplify right side
    72,815.22x = 2,779,005,663.28
  5. Step 5: Solve for x
    x = 2,779,005,663.28/72,815.22
  6. Step 6: Final answer
    x = 38,165.18

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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.