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Finding the Fourth Proportional to 91,991.92, 126,950.08 and 55,692.96

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Solution

The fourth proportional to 91,991.92, 126,950.08 and 55,692.96 is: 76,857.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,991.92 : 126,950.08 = 55,692.96 : x
  2. Step 2: Convert to fraction form
    91,991.92/126,950.08 = 55,692.96/x
  3. Step 3: Cross multiply
    91,991.92x = 126,950.08 × 55,692.96
  4. Step 4: Simplify right side
    91,991.92x = 7,070,225,727.44
  5. Step 5: Solve for x
    x = 7,070,225,727.44/91,991.92
  6. Step 6: Final answer
    x = 76,857.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.