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Finding the Fourth Proportional to 66,668.90, 100,058.03 and 64,481.90

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Solution

The fourth proportional to 66,668.90, 100,058.03 and 64,481.90 is: 96,775.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,668.90 : 100,058.03 = 64,481.90 : x
  2. Step 2: Convert to fraction form
    66,668.90/100,058.03 = 64,481.90/x
  3. Step 3: Cross multiply
    66,668.90x = 100,058.03 × 64,481.90
  4. Step 4: Simplify right side
    66,668.90x = 6,451,931,562.25
  5. Step 5: Solve for x
    x = 6,451,931,562.25/66,668.90
  6. Step 6: Final answer
    x = 96,775.73

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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.