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Finding the Fourth Proportional to 66,668.20, 92,001.70 and 36,860.20

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Solution

The fourth proportional to 66,668.20, 92,001.70 and 36,860.20 is: 50,866.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,668.20 : 92,001.70 = 36,860.20 : x
  2. Step 2: Convert to fraction form
    66,668.20/92,001.70 = 36,860.20/x
  3. Step 3: Cross multiply
    66,668.20x = 92,001.70 × 36,860.20
  4. Step 4: Simplify right side
    66,668.20x = 3,391,201,062.34
  5. Step 5: Solve for x
    x = 3,391,201,062.34/66,668.20
  6. Step 6: Final answer
    x = 50,866.85

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1.5x scale

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.