Home / 81,359.52-121,544.49-52,662.68

Finding the Fourth Proportional to 81,359.52, 121,544.49 and 52,662.68

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Solution

The fourth proportional to 81,359.52, 121,544.49 and 52,662.68 is: 78,673.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,359.52 : 121,544.49 = 52,662.68 : x
  2. Step 2: Convert to fraction form
    81,359.52/121,544.49 = 52,662.68/x
  3. Step 3: Cross multiply
    81,359.52x = 121,544.49 × 52,662.68
  4. Step 4: Simplify right side
    81,359.52x = 6,400,858,821.92
  5. Step 5: Solve for x
    x = 6,400,858,821.92/81,359.52
  6. Step 6: Final answer
    x = 78,673.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.