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Finding the Fourth Proportional to 64,508.03, 89,021.07 and 36,213.69

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Solution

The fourth proportional to 64,508.03, 89,021.07 and 36,213.69 is: 49,974.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,508.03 : 89,021.07 = 36,213.69 : x
  2. Step 2: Convert to fraction form
    64,508.03/89,021.07 = 36,213.69/x
  3. Step 3: Cross multiply
    64,508.03x = 89,021.07 × 36,213.69
  4. Step 4: Simplify right side
    64,508.03x = 3,223,781,432.45
  5. Step 5: Solve for x
    x = 3,223,781,432.45/64,508.03
  6. Step 6: Final answer
    x = 49,974.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.