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Finding the Fourth Proportional to 74,071.80, 111,133.62 and 21,484.44

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Solution

The fourth proportional to 74,071.80, 111,133.62 and 21,484.44 is: 32,234.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,071.80 : 111,133.62 = 21,484.44 : x
  2. Step 2: Convert to fraction form
    74,071.80/111,133.62 = 21,484.44/x
  3. Step 3: Cross multiply
    74,071.80x = 111,133.62 × 21,484.44
  4. Step 4: Simplify right side
    74,071.80x = 2,387,643,590.87
  5. Step 5: Solve for x
    x = 2,387,643,590.87/74,071.80
  6. Step 6: Final answer
    x = 32,234.18

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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.