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Finding the Fourth Proportional to 44,578.20, 66,837 and 21,207

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Solution

The fourth proportional to 44,578.20, 66,837 and 21,207 is: 31,796.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    44,578.20 : 66,837 = 21,207 : x
  2. Step 2: Convert to fraction form
    44,578.20/66,837 = 21,207/x
  3. Step 3: Cross multiply
    44,578.20x = 66,837 × 21,207
  4. Step 4: Simplify right side
    44,578.20x = 1,417,412,259
  5. Step 5: Solve for x
    x = 1,417,412,259/44,578.20
  6. Step 6: Final answer
    x = 31,796.09

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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.