Home / 69,629.52-96,078.60-39,815.76

Finding the Fourth Proportional to 69,629.52, 96,078.60 and 39,815.76

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Solution

The fourth proportional to 69,629.52, 96,078.60 and 39,815.76 is: 54,939.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,629.52 : 96,078.60 = 39,815.76 : x
  2. Step 2: Convert to fraction form
    69,629.52/96,078.60 = 39,815.76/x
  3. Step 3: Cross multiply
    69,629.52x = 96,078.60 × 39,815.76
  4. Step 4: Simplify right side
    69,629.52x = 3,825,442,478.74
  5. Step 5: Solve for x
    x = 3,825,442,478.74/69,629.52
  6. Step 6: Final answer
    x = 54,939.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.