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Finding the Fourth Proportional to 67,235.40, 100,809.90 and 27,808.20

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Solution

The fourth proportional to 67,235.40, 100,809.90 and 27,808.20 is: 41,694.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,235.40 : 100,809.90 = 27,808.20 : x
  2. Step 2: Convert to fraction form
    67,235.40/100,809.90 = 27,808.20/x
  3. Step 3: Cross multiply
    67,235.40x = 100,809.90 × 27,808.20
  4. Step 4: Simplify right side
    67,235.40x = 2,803,341,861.18
  5. Step 5: Solve for x
    x = 2,803,341,861.18/67,235.40
  6. Step 6: Final answer
    x = 41,694.43

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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.