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Finding the Fourth Proportional to 88,071.93, 120,791.97 and 84,455.15

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Solution

The fourth proportional to 88,071.93, 120,791.97 and 84,455.15 is: 115,831.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,071.93 : 120,791.97 = 84,455.15 : x
  2. Step 2: Convert to fraction form
    88,071.93/120,791.97 = 84,455.15/x
  3. Step 3: Cross multiply
    88,071.93x = 120,791.97 × 84,455.15
  4. Step 4: Simplify right side
    88,071.93x = 10,201,503,945.15
  5. Step 5: Solve for x
    x = 10,201,503,945.15/88,071.93
  6. Step 6: Final answer
    x = 115,831.50

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.