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Finding the Fourth Proportional to 80,073.46, 110,429.77 and 66,439.90

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Solution

The fourth proportional to 80,073.46, 110,429.77 and 66,439.90 is: 91,627.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,073.46 : 110,429.77 = 66,439.90 : x
  2. Step 2: Convert to fraction form
    80,073.46/110,429.77 = 66,439.90/x
  3. Step 3: Cross multiply
    80,073.46x = 110,429.77 × 66,439.90
  4. Step 4: Simplify right side
    80,073.46x = 7,336,942,875.82
  5. Step 5: Solve for x
    x = 7,336,942,875.82/80,073.46
  6. Step 6: Final answer
    x = 91,627.65

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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.