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Finding the Fourth Proportional to 89,699.52, 123,785.46 and 49,413.45

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Solution

The fourth proportional to 89,699.52, 123,785.46 and 49,413.45 is: 68,190.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,699.52 : 123,785.46 = 49,413.45 : x
  2. Step 2: Convert to fraction form
    89,699.52/123,785.46 = 49,413.45/x
  3. Step 3: Cross multiply
    89,699.52x = 123,785.46 × 49,413.45
  4. Step 4: Simplify right side
    89,699.52x = 6,116,666,638.44
  5. Step 5: Solve for x
    x = 6,116,666,638.44/89,699.52
  6. Step 6: Final answer
    x = 68,190.63

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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.