Home / 75,815.52-104,585.76-57,879.42

Finding the Fourth Proportional to 75,815.52, 104,585.76 and 57,879.42

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Solution

The fourth proportional to 75,815.52, 104,585.76 and 57,879.42 is: 79,843.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,815.52 : 104,585.76 = 57,879.42 : x
  2. Step 2: Convert to fraction form
    75,815.52/104,585.76 = 57,879.42/x
  3. Step 3: Cross multiply
    75,815.52x = 104,585.76 × 57,879.42
  4. Step 4: Simplify right side
    75,815.52x = 6,053,363,129.06
  5. Step 5: Solve for x
    x = 6,053,363,129.06/75,815.52
  6. Step 6: Final answer
    x = 79,843.32

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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.