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Finding the Fourth Proportional to 88,821.90, 122,628.60 and 84,559.32

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Solution

The fourth proportional to 88,821.90, 122,628.60 and 84,559.32 is: 116,743.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,821.90 : 122,628.60 = 84,559.32 : x
  2. Step 2: Convert to fraction form
    88,821.90/122,628.60 = 84,559.32/x
  3. Step 3: Cross multiply
    88,821.90x = 122,628.60 × 84,559.32
  4. Step 4: Simplify right side
    88,821.90x = 10,369,391,028.55
  5. Step 5: Solve for x
    x = 10,369,391,028.55/88,821.90
  6. Step 6: Final answer
    x = 116,743.63

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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.