Home / 81,041.62-121,616.73-28,451.26

Finding the Fourth Proportional to 81,041.62, 121,616.73 and 28,451.26

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Solution

The fourth proportional to 81,041.62, 121,616.73 and 28,451.26 is: 42,695.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,041.62 : 121,616.73 = 28,451.26 : x
  2. Step 2: Convert to fraction form
    81,041.62/121,616.73 = 28,451.26/x
  3. Step 3: Cross multiply
    81,041.62x = 121,616.73 × 28,451.26
  4. Step 4: Simplify right side
    81,041.62x = 3,460,149,205.58
  5. Step 5: Solve for x
    x = 3,460,149,205.58/81,041.62
  6. Step 6: Final answer
    x = 42,695.95

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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.