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Finding the Fourth Proportional to 67,722.80, 101,438.40 and 36,521.60

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Solution

The fourth proportional to 67,722.80, 101,438.40 and 36,521.60 is: 54,703.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,722.80 : 101,438.40 = 36,521.60 : x
  2. Step 2: Convert to fraction form
    67,722.80/101,438.40 = 36,521.60/x
  3. Step 3: Cross multiply
    67,722.80x = 101,438.40 × 36,521.60
  4. Step 4: Simplify right side
    67,722.80x = 3,704,692,669.44
  5. Step 5: Solve for x
    x = 3,704,692,669.44/67,722.80
  6. Step 6: Final answer
    x = 54,703.77

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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.