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Finding the Fourth Proportional to 64,747.80, 89,351.64 and 36,453.69

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Solution

The fourth proportional to 64,747.80, 89,351.64 and 36,453.69 is: 50,305.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,747.80 : 89,351.64 = 36,453.69 : x
  2. Step 2: Convert to fraction form
    64,747.80/89,351.64 = 36,453.69/x
  3. Step 3: Cross multiply
    64,747.80x = 89,351.64 × 36,453.69
  4. Step 4: Simplify right side
    64,747.80x = 3,257,196,985.55
  5. Step 5: Solve for x
    x = 3,257,196,985.55/64,747.80
  6. Step 6: Final answer
    x = 50,305.91

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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.