Home / 87,420.20-120,640.26-49,692.20

Finding the Fourth Proportional to 87,420.20, 120,640.26 and 49,692.20

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Solution

The fourth proportional to 87,420.20, 120,640.26 and 49,692.20 is: 68,575.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,420.20 : 120,640.26 = 49,692.20 : x
  2. Step 2: Convert to fraction form
    87,420.20/120,640.26 = 49,692.20/x
  3. Step 3: Cross multiply
    87,420.20x = 120,640.26 × 49,692.20
  4. Step 4: Simplify right side
    87,420.20x = 5,994,879,927.97
  5. Step 5: Solve for x
    x = 5,994,879,927.97/87,420.20
  6. Step 6: Final answer
    x = 68,575.45

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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.