Home / 90,786.75-136,202.00-28,457.25

Finding the Fourth Proportional to 90,786.75, 136,202.00 and 28,457.25

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Solution

The fourth proportional to 90,786.75, 136,202.00 and 28,457.25 is: 42,692.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,786.75 : 136,202.00 = 28,457.25 : x
  2. Step 2: Convert to fraction form
    90,786.75/136,202.00 = 28,457.25/x
  3. Step 3: Cross multiply
    90,786.75x = 136,202.00 × 28,457.25
  4. Step 4: Simplify right side
    90,786.75x = 3,875,934,222.21
  5. Step 5: Solve for x
    x = 3,875,934,222.21/90,786.75
  6. Step 6: Final answer
    x = 42,692.73

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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.