Home / 78,910.76-118,322.46-26,291.56

Finding the Fourth Proportional to 78,910.76, 118,322.46 and 26,291.56

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Solution

The fourth proportional to 78,910.76, 118,322.46 and 26,291.56 is: 39,422.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,910.76 : 118,322.46 = 26,291.56 : x
  2. Step 2: Convert to fraction form
    78,910.76/118,322.46 = 26,291.56/x
  3. Step 3: Cross multiply
    78,910.76x = 118,322.46 × 26,291.56
  4. Step 4: Simplify right side
    78,910.76x = 3,110,882,056.44
  5. Step 5: Solve for x
    x = 3,110,882,056.44/78,910.76
  6. Step 6: Final answer
    x = 39,422.79

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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.