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Finding the Fourth Proportional to 67,209.94, 100,747.14 and 42,267.81

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Solution

The fourth proportional to 67,209.94, 100,747.14 and 42,267.81 is: 63,359.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,209.94 : 100,747.14 = 42,267.81 : x
  2. Step 2: Convert to fraction form
    67,209.94/100,747.14 = 42,267.81/x
  3. Step 3: Cross multiply
    67,209.94x = 100,747.14 × 42,267.81
  4. Step 4: Simplify right side
    67,209.94x = 4,258,360,971.56
  5. Step 5: Solve for x
    x = 4,258,360,971.56/67,209.94
  6. Step 6: Final answer
    x = 63,359.09

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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.