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Finding the Fourth Proportional to 67,123.20, 100,680.48 and 20,376.48

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Solution

The fourth proportional to 67,123.20, 100,680.48 and 20,376.48 is: 30,563.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,123.20 : 100,680.48 = 20,376.48 : x
  2. Step 2: Convert to fraction form
    67,123.20/100,680.48 = 20,376.48/x
  3. Step 3: Cross multiply
    67,123.20x = 100,680.48 × 20,376.48
  4. Step 4: Simplify right side
    67,123.20x = 2,051,513,787.11
  5. Step 5: Solve for x
    x = 2,051,513,787.11/67,123.20
  6. Step 6: Final answer
    x = 30,563.41

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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.