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Finding the Fourth Proportional to 77,413.60, 115,947.60 and 63,589.60

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Solution

The fourth proportional to 77,413.60, 115,947.60 and 63,589.60 is: 95,242.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,413.60 : 115,947.60 = 63,589.60 : x
  2. Step 2: Convert to fraction form
    77,413.60/115,947.60 = 63,589.60/x
  3. Step 3: Cross multiply
    77,413.60x = 115,947.60 × 63,589.60
  4. Step 4: Simplify right side
    77,413.60x = 7,373,061,504.96
  5. Step 5: Solve for x
    x = 7,373,061,504.96/77,413.60
  6. Step 6: Final answer
    x = 95,242.46

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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.