Home / 78,601.39-117,890.54-25,286.38

Finding the Fourth Proportional to 78,601.39, 117,890.54 and 25,286.38

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Solution

The fourth proportional to 78,601.39, 117,890.54 and 25,286.38 is: 37,925.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,601.39 : 117,890.54 = 25,286.38 : x
  2. Step 2: Convert to fraction form
    78,601.39/117,890.54 = 25,286.38/x
  3. Step 3: Cross multiply
    78,601.39x = 117,890.54 × 25,286.38
  4. Step 4: Simplify right side
    78,601.39x = 2,981,024,666.51
  5. Step 5: Solve for x
    x = 2,981,024,666.51/78,601.39
  6. Step 6: Final answer
    x = 37,925.85

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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.