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Finding the Fourth Proportional to 67,258.80, 100,985.40 and 50,734.80

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Solution

The fourth proportional to 67,258.80, 100,985.40 and 50,734.80 is: 76,175.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,258.80 : 100,985.40 = 50,734.80 : x
  2. Step 2: Convert to fraction form
    67,258.80/100,985.40 = 50,734.80/x
  3. Step 3: Cross multiply
    67,258.80x = 100,985.40 × 50,734.80
  4. Step 4: Simplify right side
    67,258.80x = 5,123,474,071.92
  5. Step 5: Solve for x
    x = 5,123,474,071.92/67,258.80
  6. Step 6: Final answer
    x = 76,175.52

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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.