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Finding the Fourth Proportional to 73,869.93, 110,772.08 and 21,267.11

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Solution

The fourth proportional to 73,869.93, 110,772.08 and 21,267.11 is: 31,891.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,869.93 : 110,772.08 = 21,267.11 : x
  2. Step 2: Convert to fraction form
    73,869.93/110,772.08 = 21,267.11/x
  3. Step 3: Cross multiply
    73,869.93x = 110,772.08 × 21,267.11
  4. Step 4: Simplify right side
    73,869.93x = 2,355,802,010.29
  5. Step 5: Solve for x
    x = 2,355,802,010.29/73,869.93
  6. Step 6: Final answer
    x = 31,891.22

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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.