Home / 78,077.76-117,099.12-35,917.35

Finding the Fourth Proportional to 78,077.76, 117,099.12 and 35,917.35

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Solution

The fourth proportional to 78,077.76, 117,099.12 and 35,917.35 is: 53,867.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,077.76 : 117,099.12 = 35,917.35 : x
  2. Step 2: Convert to fraction form
    78,077.76/117,099.12 = 35,917.35/x
  3. Step 3: Cross multiply
    78,077.76x = 117,099.12 × 35,917.35
  4. Step 4: Simplify right side
    78,077.76x = 4,205,890,077.73
  5. Step 5: Solve for x
    x = 4,205,890,077.73/78,077.76
  6. Step 6: Final answer
    x = 53,867.97

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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.