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Finding the Fourth Proportional to 89,223.45, 123,138.64 and 53,413.45

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Solution

The fourth proportional to 89,223.45, 123,138.64 and 53,413.45 is: 73,716.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,223.45 : 123,138.64 = 53,413.45 : x
  2. Step 2: Convert to fraction form
    89,223.45/123,138.64 = 53,413.45/x
  3. Step 3: Cross multiply
    89,223.45x = 123,138.64 × 53,413.45
  4. Step 4: Simplify right side
    89,223.45x = 6,577,259,349.63
  5. Step 5: Solve for x
    x = 6,577,259,349.63/89,223.45
  6. Step 6: Final answer
    x = 73,716.71

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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.