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Finding the Fourth Proportional to 55,069.98, 82,520.86 and 40,961.78

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Solution

The fourth proportional to 55,069.98, 82,520.86 and 40,961.78 is: 61,380.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,069.98 : 82,520.86 = 40,961.78 : x
  2. Step 2: Convert to fraction form
    55,069.98/82,520.86 = 40,961.78/x
  3. Step 3: Cross multiply
    55,069.98x = 82,520.86 × 40,961.78
  4. Step 4: Simplify right side
    55,069.98x = 3,380,201,312.73
  5. Step 5: Solve for x
    x = 3,380,201,312.73/55,069.98
  6. Step 6: Final answer
    x = 61,380.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.