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Finding the Fourth Proportional to 66,460.26, 91,720.62 and 37,788.92

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Solution

The fourth proportional to 66,460.26, 91,720.62 and 37,788.92 is: 52,151.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,460.26 : 91,720.62 = 37,788.92 : x
  2. Step 2: Convert to fraction form
    66,460.26/91,720.62 = 37,788.92/x
  3. Step 3: Cross multiply
    66,460.26x = 91,720.62 × 37,788.92
  4. Step 4: Simplify right side
    66,460.26x = 3,466,022,692.63
  5. Step 5: Solve for x
    x = 3,466,022,692.63/66,460.26
  6. Step 6: Final answer
    x = 52,151.81

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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.