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Finding the Fourth Proportional to 66,104.00, 99,134.96 and 21,720.50

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Solution

The fourth proportional to 66,104.00, 99,134.96 and 21,720.50 is: 32,573.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,104.00 : 99,134.96 = 21,720.50 : x
  2. Step 2: Convert to fraction form
    66,104.00/99,134.96 = 21,720.50/x
  3. Step 3: Cross multiply
    66,104.00x = 99,134.96 × 21,720.50
  4. Step 4: Simplify right side
    66,104.00x = 2,153,260,294.40
  5. Step 5: Solve for x
    x = 2,153,260,294.40/66,104.00
  6. Step 6: Final answer
    x = 32,573.83

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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.