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Finding the Fourth Proportional to 89,765.70, 134,673.52 and 39,169.16

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Solution

The fourth proportional to 89,765.70, 134,673.52 and 39,169.16 is: 58,764.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,765.70 : 134,673.52 = 39,169.16 : x
  2. Step 2: Convert to fraction form
    89,765.70/134,673.52 = 39,169.16/x
  3. Step 3: Cross multiply
    89,765.70x = 134,673.52 × 39,169.16
  4. Step 4: Simplify right side
    89,765.70x = 5,275,048,652.64
  5. Step 5: Solve for x
    x = 5,275,048,652.64/89,765.70
  6. Step 6: Final answer
    x = 58,764.64

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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.