Home / 87,692.90-121,028.04-49,460.30

Finding the Fourth Proportional to 87,692.90, 121,028.04 and 49,460.30

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Solution

The fourth proportional to 87,692.90, 121,028.04 and 49,460.30 is: 68,261.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,692.90 : 121,028.04 = 49,460.30 : x
  2. Step 2: Convert to fraction form
    87,692.90/121,028.04 = 49,460.30/x
  3. Step 3: Cross multiply
    87,692.90x = 121,028.04 × 49,460.30
  4. Step 4: Simplify right side
    87,692.90x = 5,986,083,166.81
  5. Step 5: Solve for x
    x = 5,986,083,166.81/87,692.90
  6. Step 6: Final answer
    x = 68,261.89

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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.