Home / 87,692.16-120,986.52-53,665.20

Finding the Fourth Proportional to 87,692.16, 120,986.52 and 53,665.20

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Solution

The fourth proportional to 87,692.16, 120,986.52 and 53,665.20 is: 74,040.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,692.16 : 120,986.52 = 53,665.20 : x
  2. Step 2: Convert to fraction form
    87,692.16/120,986.52 = 53,665.20/x
  3. Step 3: Cross multiply
    87,692.16x = 120,986.52 × 53,665.20
  4. Step 4: Simplify right side
    87,692.16x = 6,492,765,793.10
  5. Step 5: Solve for x
    x = 6,492,765,793.10/87,692.16
  6. Step 6: Final answer
    x = 74,040.44

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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.