Home / 81,329.15-121,963.54-28,006.24

Finding the Fourth Proportional to 81,329.15, 121,963.54 and 28,006.24

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Solution

The fourth proportional to 81,329.15, 121,963.54 and 28,006.24 is: 41,998.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,329.15 : 121,963.54 = 28,006.24 : x
  2. Step 2: Convert to fraction form
    81,329.15/121,963.54 = 28,006.24/x
  3. Step 3: Cross multiply
    81,329.15x = 121,963.54 × 28,006.24
  4. Step 4: Simplify right side
    81,329.15x = 3,415,740,172.49
  5. Step 5: Solve for x
    x = 3,415,740,172.49/81,329.15
  6. Step 6: Final answer
    x = 41,998.97

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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.