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Finding the Fourth Proportional to 66,334.90, 91,543.80 and 36,121.88

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Solution

The fourth proportional to 66,334.90, 91,543.80 and 36,121.88 is: 49,849.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,334.90 : 91,543.80 = 36,121.88 : x
  2. Step 2: Convert to fraction form
    66,334.90/91,543.80 = 36,121.88/x
  3. Step 3: Cross multiply
    66,334.90x = 91,543.80 × 36,121.88
  4. Step 4: Simplify right side
    66,334.90x = 3,306,734,158.34
  5. Step 5: Solve for x
    x = 3,306,734,158.34/66,334.90
  6. Step 6: Final answer
    x = 49,849.09

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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.