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Finding the Fourth Proportional to 81,479.93, 122,219.99 and 22,316.11

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Solution

The fourth proportional to 81,479.93, 122,219.99 and 22,316.11 is: 33,474.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,479.93 : 122,219.99 = 22,316.11 : x
  2. Step 2: Convert to fraction form
    81,479.93/122,219.99 = 22,316.11/x
  3. Step 3: Cross multiply
    81,479.93x = 122,219.99 × 22,316.11
  4. Step 4: Simplify right side
    81,479.93x = 2,727,474,741.04
  5. Step 5: Solve for x
    x = 2,727,474,741.04/81,479.93
  6. Step 6: Final answer
    x = 33,474.19

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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.