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Finding the Fourth Proportional to 66,668.30, 100,117.65 and 35,564.30

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Solution

The fourth proportional to 66,668.30, 100,117.65 and 35,564.30 is: 53,407.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,668.30 : 100,117.65 = 35,564.30 : x
  2. Step 2: Convert to fraction form
    66,668.30/100,117.65 = 35,564.30/x
  3. Step 3: Cross multiply
    66,668.30x = 100,117.65 × 35,564.30
  4. Step 4: Simplify right side
    66,668.30x = 3,560,614,139.90
  5. Step 5: Solve for x
    x = 3,560,614,139.90/66,668.30
  6. Step 6: Final answer
    x = 53,407.90

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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.