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Finding the Fourth Proportional to 88,724.92, 122,413.86 and 56,838.28

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Solution

The fourth proportional to 88,724.92, 122,413.86 and 56,838.28 is: 78,419.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,724.92 : 122,413.86 = 56,838.28 : x
  2. Step 2: Convert to fraction form
    88,724.92/122,413.86 = 56,838.28/x
  3. Step 3: Cross multiply
    88,724.92x = 122,413.86 × 56,838.28
  4. Step 4: Simplify right side
    88,724.92x = 6,957,793,250.56
  5. Step 5: Solve for x
    x = 6,957,793,250.56/88,724.92
  6. Step 6: Final answer
    x = 78,419.83

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1.5x scale

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.