Home / 78,558.24-117,844.68-31,814.76

Finding the Fourth Proportional to 78,558.24, 117,844.68 and 31,814.76

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Solution

The fourth proportional to 78,558.24, 117,844.68 and 31,814.76 is: 47,725.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,558.24 : 117,844.68 = 31,814.76 : x
  2. Step 2: Convert to fraction form
    78,558.24/117,844.68 = 31,814.76/x
  3. Step 3: Cross multiply
    78,558.24x = 117,844.68 × 31,814.76
  4. Step 4: Simplify right side
    78,558.24x = 3,749,200,211.48
  5. Step 5: Solve for x
    x = 3,749,200,211.48/78,558.24
  6. Step 6: Final answer
    x = 47,725.10

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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.