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Finding the Fourth Proportional to 66,588, 91,891.44 and 36,781.92

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Solution

The fourth proportional to 66,588, 91,891.44 and 36,781.92 is: 50,759.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,588 : 91,891.44 = 36,781.92 : x
  2. Step 2: Convert to fraction form
    66,588/91,891.44 = 36,781.92/x
  3. Step 3: Cross multiply
    66,588x = 91,891.44 × 36,781.92
  4. Step 4: Simplify right side
    66,588x = 3,379,943,594.76
  5. Step 5: Solve for x
    x = 3,379,943,594.76/66,588
  6. Step 6: Final answer
    x = 50,759.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.