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Finding the Fourth Proportional to 66,605.79, 99,843.75 and 26,612.85

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Solution

The fourth proportional to 66,605.79, 99,843.75 and 26,612.85 is: 39,893.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,605.79 : 99,843.75 = 26,612.85 : x
  2. Step 2: Convert to fraction form
    66,605.79/99,843.75 = 26,612.85/x
  3. Step 3: Cross multiply
    66,605.79x = 99,843.75 × 26,612.85
  4. Step 4: Simplify right side
    66,605.79x = 2,657,126,742.19
  5. Step 5: Solve for x
    x = 2,657,126,742.19/66,605.79
  6. Step 6: Final answer
    x = 39,893.33

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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.