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Finding the Fourth Proportional to 66,140.50, 91,274.14 and 35,926.34

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Solution

The fourth proportional to 66,140.50, 91,274.14 and 35,926.34 is: 49,578.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,140.50 : 91,274.14 = 35,926.34 : x
  2. Step 2: Convert to fraction form
    66,140.50/91,274.14 = 35,926.34/x
  3. Step 3: Cross multiply
    66,140.50x = 91,274.14 × 35,926.34
  4. Step 4: Simplify right side
    66,140.50x = 3,279,145,375.38
  5. Step 5: Solve for x
    x = 3,279,145,375.38/66,140.50
  6. Step 6: Final answer
    x = 49,578.48

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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.