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Finding the Fourth Proportional to 65,771.66, 90,765.30 and 35,556.94

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Solution

The fourth proportional to 65,771.66, 90,765.30 and 35,556.94 is: 49,068.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,771.66 : 90,765.30 = 35,556.94 : x
  2. Step 2: Convert to fraction form
    65,771.66/90,765.30 = 35,556.94/x
  3. Step 3: Cross multiply
    65,771.66x = 90,765.30 × 35,556.94
  4. Step 4: Simplify right side
    65,771.66x = 3,227,336,326.18
  5. Step 5: Solve for x
    x = 3,227,336,326.18/65,771.66
  6. Step 6: Final answer
    x = 49,068.80

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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.