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Finding the Fourth Proportional to 66,241.49, 99,366.86 and 21,899.45

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Solution

The fourth proportional to 66,241.49, 99,366.86 and 21,899.45 is: 32,850.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,241.49 : 99,366.86 = 21,899.45 : x
  2. Step 2: Convert to fraction form
    66,241.49/99,366.86 = 21,899.45/x
  3. Step 3: Cross multiply
    66,241.49x = 99,366.86 × 21,899.45
  4. Step 4: Simplify right side
    66,241.49x = 2,176,079,885.39
  5. Step 5: Solve for x
    x = 2,176,079,885.39/66,241.49
  6. Step 6: Final answer
    x = 32,850.71

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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.