Home / 91,121.64-136,692.20-38,536.44

Finding the Fourth Proportional to 91,121.64, 136,692.20 and 38,536.44

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Solution

The fourth proportional to 91,121.64, 136,692.20 and 38,536.44 is: 57,808.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,121.64 : 136,692.20 = 38,536.44 : x
  2. Step 2: Convert to fraction form
    91,121.64/136,692.20 = 38,536.44/x
  3. Step 3: Cross multiply
    91,121.64x = 136,692.20 × 38,536.44
  4. Step 4: Simplify right side
    91,121.64x = 5,267,630,571.09
  5. Step 5: Solve for x
    x = 5,267,630,571.09/91,121.64
  6. Step 6: Final answer
    x = 57,808.78

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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.