Home / 81,078.58-121,399.17-52,928.92

Finding the Fourth Proportional to 81,078.58, 121,399.17 and 52,928.92

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Solution

The fourth proportional to 81,078.58, 121,399.17 and 52,928.92 is: 79,250.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,078.58 : 121,399.17 = 52,928.92 : x
  2. Step 2: Convert to fraction form
    81,078.58/121,399.17 = 52,928.92/x
  3. Step 3: Cross multiply
    81,078.58x = 121,399.17 × 52,928.92
  4. Step 4: Simplify right side
    81,078.58x = 6,425,526,957.00
  5. Step 5: Solve for x
    x = 6,425,526,957.00/81,078.58
  6. Step 6: Final answer
    x = 79,250.61

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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.