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Finding the Fourth Proportional to 65,771.64, 90,765.24 and 37,479.36

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Solution

The fourth proportional to 65,771.64, 90,765.24 and 37,479.36 is: 51,721.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,771.64 : 90,765.24 = 37,479.36 : x
  2. Step 2: Convert to fraction form
    65,771.64/90,765.24 = 37,479.36/x
  3. Step 3: Cross multiply
    65,771.64x = 90,765.24 × 37,479.36
  4. Step 4: Simplify right side
    65,771.64x = 3,401,823,105.45
  5. Step 5: Solve for x
    x = 3,401,823,105.45/65,771.64
  6. Step 6: Final answer
    x = 51,721.73

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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.