Home / 78,752.17-117,996.78-55,336.69

Finding the Fourth Proportional to 78,752.17, 117,996.78 and 55,336.69

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Solution

The fourth proportional to 78,752.17, 117,996.78 and 55,336.69 is: 82,912.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,752.17 : 117,996.78 = 55,336.69 : x
  2. Step 2: Convert to fraction form
    78,752.17/117,996.78 = 55,336.69/x
  3. Step 3: Cross multiply
    78,752.17x = 117,996.78 × 55,336.69
  4. Step 4: Simplify right side
    78,752.17x = 6,529,551,235.86
  5. Step 5: Solve for x
    x = 6,529,551,235.86/78,752.17
  6. Step 6: Final answer
    x = 82,912.65

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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.