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Finding the Fourth Proportional to 66,622.90, 91,832.76 and 45,105.88

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Solution

The fourth proportional to 66,622.90, 91,832.76 and 45,105.88 is: 62,173.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,622.90 : 91,832.76 = 45,105.88 : x
  2. Step 2: Convert to fraction form
    66,622.90/91,832.76 = 45,105.88/x
  3. Step 3: Cross multiply
    66,622.90x = 91,832.76 × 45,105.88
  4. Step 4: Simplify right side
    66,622.90x = 4,142,197,452.63
  5. Step 5: Solve for x
    x = 4,142,197,452.63/66,622.90
  6. Step 6: Final answer
    x = 62,173.78

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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.