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Finding the Fourth Proportional to 84,424.64, 126,314.55 and 73,816.33

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Solution

The fourth proportional to 84,424.64, 126,314.55 and 73,816.33 is: 110,442.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,424.64 : 126,314.55 = 73,816.33 : x
  2. Step 2: Convert to fraction form
    84,424.64/126,314.55 = 73,816.33/x
  3. Step 3: Cross multiply
    84,424.64x = 126,314.55 × 73,816.33
  4. Step 4: Simplify right side
    84,424.64x = 9,324,076,506.60
  5. Step 5: Solve for x
    x = 9,324,076,506.60/84,424.64
  6. Step 6: Final answer
    x = 110,442.60

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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.