Home / 81,480.20-122,154.53-28,860.98

Finding the Fourth Proportional to 81,480.20, 122,154.53 and 28,860.98

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Solution

The fourth proportional to 81,480.20, 122,154.53 and 28,860.98 is: 43,268.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,480.20 : 122,154.53 = 28,860.98 : x
  2. Step 2: Convert to fraction form
    81,480.20/122,154.53 = 28,860.98/x
  3. Step 3: Cross multiply
    81,480.20x = 122,154.53 × 28,860.98
  4. Step 4: Simplify right side
    81,480.20x = 3,525,498,692.16
  5. Step 5: Solve for x
    x = 3,525,498,692.16/81,480.20
  6. Step 6: Final answer
    x = 43,268.17

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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.