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Finding the Fourth Proportional to 80,074.46, 110,431.16 and 66,440.90

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Solution

The fourth proportional to 80,074.46, 110,431.16 and 66,440.90 is: 91,629.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,074.46 : 110,431.16 = 66,440.90 : x
  2. Step 2: Convert to fraction form
    80,074.46/110,431.16 = 66,440.90/x
  3. Step 3: Cross multiply
    80,074.46x = 110,431.16 × 66,440.90
  4. Step 4: Simplify right side
    80,074.46x = 7,337,144,774.08
  5. Step 5: Solve for x
    x = 7,337,144,774.08/80,074.46
  6. Step 6: Final answer
    x = 91,629.03

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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.