Home / 78,516.89-117,773.73-19,353.07

Finding the Fourth Proportional to 78,516.89, 117,773.73 and 19,353.07

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Solution

The fourth proportional to 78,516.89, 117,773.73 and 19,353.07 is: 29,029.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,516.89 : 117,773.73 = 19,353.07 : x
  2. Step 2: Convert to fraction form
    78,516.89/117,773.73 = 19,353.07/x
  3. Step 3: Cross multiply
    78,516.89x = 117,773.73 × 19,353.07
  4. Step 4: Simplify right side
    78,516.89x = 2,279,283,240.85
  5. Step 5: Solve for x
    x = 2,279,283,240.85/78,516.89
  6. Step 6: Final answer
    x = 29,029.21

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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.