Home / 81,007.82-121,511.73-25,599.50

Finding the Fourth Proportional to 81,007.82, 121,511.73 and 25,599.50

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Solution

The fourth proportional to 81,007.82, 121,511.73 and 25,599.50 is: 38,399.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,007.82 : 121,511.73 = 25,599.50 : x
  2. Step 2: Convert to fraction form
    81,007.82/121,511.73 = 25,599.50/x
  3. Step 3: Cross multiply
    81,007.82x = 121,511.73 × 25,599.50
  4. Step 4: Simplify right side
    81,007.82x = 3,110,639,532.14
  5. Step 5: Solve for x
    x = 3,110,639,532.14/81,007.82
  6. Step 6: Final answer
    x = 38,399.25

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1.5x scale

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.