Home / 78,279.08-117,151.66-49,801.64

Finding the Fourth Proportional to 78,279.08, 117,151.66 and 49,801.64

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Solution

The fourth proportional to 78,279.08, 117,151.66 and 49,801.64 is: 74,532.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,279.08 : 117,151.66 = 49,801.64 : x
  2. Step 2: Convert to fraction form
    78,279.08/117,151.66 = 49,801.64/x
  3. Step 3: Cross multiply
    78,279.08x = 117,151.66 × 49,801.64
  4. Step 4: Simplify right side
    78,279.08x = 5,834,344,796.72
  5. Step 5: Solve for x
    x = 5,834,344,796.72/78,279.08
  6. Step 6: Final answer
    x = 74,532.62

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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.