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Finding the Fourth Proportional to 66,087.70, 99,110.55 and 21,704.12

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Solution

The fourth proportional to 66,087.70, 99,110.55 and 21,704.12 is: 32,549.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,087.70 : 99,110.55 = 21,704.12 : x
  2. Step 2: Convert to fraction form
    66,087.70/99,110.55 = 21,704.12/x
  3. Step 3: Cross multiply
    66,087.70x = 99,110.55 × 21,704.12
  4. Step 4: Simplify right side
    66,087.70x = 2,151,107,227.97
  5. Step 5: Solve for x
    x = 2,151,107,227.97/66,087.70
  6. Step 6: Final answer
    x = 32,549.28

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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.