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Finding the Fourth Proportional to 66,143.70, 99,230.58 and 21,774.96

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Solution

The fourth proportional to 66,143.70, 99,230.58 and 21,774.96 is: 32,667.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,143.70 : 99,230.58 = 21,774.96 : x
  2. Step 2: Convert to fraction form
    66,143.70/99,230.58 = 21,774.96/x
  3. Step 3: Cross multiply
    66,143.70x = 99,230.58 × 21,774.96
  4. Step 4: Simplify right side
    66,143.70x = 2,160,741,910.28
  5. Step 5: Solve for x
    x = 2,160,741,910.28/66,143.70
  6. Step 6: Final answer
    x = 32,667.39

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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.