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Finding the Fourth Proportional to 66,331.90, 91,539.66 and 36,118.88

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Solution

The fourth proportional to 66,331.90, 91,539.66 and 36,118.88 is: 49,844.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,331.90 : 91,539.66 = 36,118.88 : x
  2. Step 2: Convert to fraction form
    66,331.90/91,539.66 = 36,118.88/x
  3. Step 3: Cross multiply
    66,331.90x = 91,539.66 × 36,118.88
  4. Step 4: Simplify right side
    66,331.90x = 3,306,309,994.78
  5. Step 5: Solve for x
    x = 3,306,309,994.78/66,331.90
  6. Step 6: Final answer
    x = 49,844.95

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1.5x scale

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.