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Finding the Fourth Proportional to 67,977.70, 101,966.55 and 28,611.70

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Solution

The fourth proportional to 67,977.70, 101,966.55 and 28,611.70 is: 42,917.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,977.70 : 101,966.55 = 28,611.70 : x
  2. Step 2: Convert to fraction form
    67,977.70/101,966.55 = 28,611.70/x
  3. Step 3: Cross multiply
    67,977.70x = 101,966.55 × 28,611.70
  4. Step 4: Simplify right side
    67,977.70x = 2,917,436,338.64
  5. Step 5: Solve for x
    x = 2,917,436,338.64/67,977.70
  6. Step 6: Final answer
    x = 42,917.55

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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.