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Finding the Fourth Proportional to 74,399.35, 111,599.96 and 21,809.89

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Solution

The fourth proportional to 74,399.35, 111,599.96 and 21,809.89 is: 32,715.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,399.35 : 111,599.96 = 21,809.89 : x
  2. Step 2: Convert to fraction form
    74,399.35/111,599.96 = 21,809.89/x
  3. Step 3: Cross multiply
    74,399.35x = 111,599.96 × 21,809.89
  4. Step 4: Simplify right side
    74,399.35x = 2,433,982,851.60
  5. Step 5: Solve for x
    x = 2,433,982,851.60/74,399.35
  6. Step 6: Final answer
    x = 32,715.11

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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.