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Finding the Fourth Proportional to 66,701.10, 100,015.20 and 27,213.60

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Solution

The fourth proportional to 66,701.10, 100,015.20 and 27,213.60 is: 40,805.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,701.10 : 100,015.20 = 27,213.60 : x
  2. Step 2: Convert to fraction form
    66,701.10/100,015.20 = 27,213.60/x
  3. Step 3: Cross multiply
    66,701.10x = 100,015.20 × 27,213.60
  4. Step 4: Simplify right side
    66,701.10x = 2,721,773,646.72
  5. Step 5: Solve for x
    x = 2,721,773,646.72/66,701.10
  6. Step 6: Final answer
    x = 40,805.53

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1.5x scale

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.