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Finding the Fourth Proportional to 66,385.98, 99,620.48 and 26,943.09

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Solution

The fourth proportional to 66,385.98, 99,620.48 and 26,943.09 is: 40,431.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,385.98 : 99,620.48 = 26,943.09 : x
  2. Step 2: Convert to fraction form
    66,385.98/99,620.48 = 26,943.09/x
  3. Step 3: Cross multiply
    66,385.98x = 99,620.48 × 26,943.09
  4. Step 4: Simplify right side
    66,385.98x = 2,684,083,532.45
  5. Step 5: Solve for x
    x = 2,684,083,532.45/66,385.98
  6. Step 6: Final answer
    x = 40,431.48

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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.