Home / 78,789.91-118,163.38-26,192.56

Finding the Fourth Proportional to 78,789.91, 118,163.38 and 26,192.56

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Solution

The fourth proportional to 78,789.91, 118,163.38 and 26,192.56 is: 39,281.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,789.91 : 118,163.38 = 26,192.56 : x
  2. Step 2: Convert to fraction form
    78,789.91/118,163.38 = 26,192.56/x
  3. Step 3: Cross multiply
    78,789.91x = 118,163.38 × 26,192.56
  4. Step 4: Simplify right side
    78,789.91x = 3,095,001,420.45
  5. Step 5: Solve for x
    x = 3,095,001,420.45/78,789.91
  6. Step 6: Final answer
    x = 39,281.70

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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.