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Finding the Fourth Proportional to 67,376.20, 101,078.70 and 20,633.80

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Solution

The fourth proportional to 67,376.20, 101,078.70 and 20,633.80 is: 30,955.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,376.20 : 101,078.70 = 20,633.80 : x
  2. Step 2: Convert to fraction form
    67,376.20/101,078.70 = 20,633.80/x
  3. Step 3: Cross multiply
    67,376.20x = 101,078.70 × 20,633.80
  4. Step 4: Simplify right side
    67,376.20x = 2,085,637,680.06
  5. Step 5: Solve for x
    x = 2,085,637,680.06/67,376.20
  6. Step 6: Final answer
    x = 30,955.11

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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.