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Finding the Fourth Proportional to 90,797.51, 125,229.66 and 77,413.07

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Solution

The fourth proportional to 90,797.51, 125,229.66 and 77,413.07 is: 106,769.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,797.51 : 125,229.66 = 77,413.07 : x
  2. Step 2: Convert to fraction form
    90,797.51/125,229.66 = 77,413.07/x
  3. Step 3: Cross multiply
    90,797.51x = 125,229.66 × 77,413.07
  4. Step 4: Simplify right side
    90,797.51x = 9,694,412,435.66
  5. Step 5: Solve for x
    x = 9,694,412,435.66/90,797.51
  6. Step 6: Final answer
    x = 106,769.58

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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.