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Finding the Fourth Proportional to 89,544.30, 134,413.65 and 69,909.90

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Solution

The fourth proportional to 89,544.30, 134,413.65 and 69,909.90 is: 104,940.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,544.30 : 134,413.65 = 69,909.90 : x
  2. Step 2: Convert to fraction form
    89,544.30/134,413.65 = 69,909.90/x
  3. Step 3: Cross multiply
    89,544.30x = 134,413.65 × 69,909.90
  4. Step 4: Simplify right side
    89,544.30x = 9,396,844,830.14
  5. Step 5: Solve for x
    x = 9,396,844,830.14/89,544.30
  6. Step 6: Final answer
    x = 104,940.74

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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.