Home / 78,308.54-108,012.26-50,001.46

Finding the Fourth Proportional to 78,308.54, 108,012.26 and 50,001.46

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Solution

The fourth proportional to 78,308.54, 108,012.26 and 50,001.46 is: 68,967.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,308.54 : 108,012.26 = 50,001.46 : x
  2. Step 2: Convert to fraction form
    78,308.54/108,012.26 = 50,001.46/x
  3. Step 3: Cross multiply
    78,308.54x = 108,012.26 × 50,001.46
  4. Step 4: Simplify right side
    78,308.54x = 5,400,770,697.90
  5. Step 5: Solve for x
    x = 5,400,770,697.90/78,308.54
  6. Step 6: Final answer
    x = 68,967.84

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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.