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Finding the Fourth Proportional to 72,618.99, 108,928.56 and 22,699.35

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Solution

The fourth proportional to 72,618.99, 108,928.56 and 22,699.35 is: 34,049.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,618.99 : 108,928.56 = 22,699.35 : x
  2. Step 2: Convert to fraction form
    72,618.99/108,928.56 = 22,699.35/x
  3. Step 3: Cross multiply
    72,618.99x = 108,928.56 × 22,699.35
  4. Step 4: Simplify right side
    72,618.99x = 2,472,607,508.44
  5. Step 5: Solve for x
    x = 2,472,607,508.44/72,618.99
  6. Step 6: Final answer
    x = 34,049.05

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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.