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Finding the Fourth Proportional to 79,317.92, 109,456.80 and 51,023.54

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Solution

The fourth proportional to 79,317.92, 109,456.80 and 51,023.54 is: 70,411.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,317.92 : 109,456.80 = 51,023.54 : x
  2. Step 2: Convert to fraction form
    79,317.92/109,456.80 = 51,023.54/x
  3. Step 3: Cross multiply
    79,317.92x = 109,456.80 × 51,023.54
  4. Step 4: Simplify right side
    79,317.92x = 5,584,873,413.07
  5. Step 5: Solve for x
    x = 5,584,873,413.07/79,317.92
  6. Step 6: Final answer
    x = 70,411.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.