Home / 80,947.19-121,346.25-54,661.07

Finding the Fourth Proportional to 80,947.19, 121,346.25 and 54,661.07

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Solution

The fourth proportional to 80,947.19, 121,346.25 and 54,661.07 is: 81,941.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,947.19 : 121,346.25 = 54,661.07 : x
  2. Step 2: Convert to fraction form
    80,947.19/121,346.25 = 54,661.07/x
  3. Step 3: Cross multiply
    80,947.19x = 121,346.25 × 54,661.07
  4. Step 4: Simplify right side
    80,947.19x = 6,632,915,865.49
  5. Step 5: Solve for x
    x = 6,632,915,865.49/80,947.19
  6. Step 6: Final answer
    x = 81,941.27

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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.