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Finding the Fourth Proportional to 115,063.76, 158,777.88 and 64,072.64

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Solution

The fourth proportional to 115,063.76, 158,777.88 and 64,072.64 is: 88,414.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,063.76 : 158,777.88 = 64,072.64 : x
  2. Step 2: Convert to fraction form
    115,063.76/158,777.88 = 64,072.64/x
  3. Step 3: Cross multiply
    115,063.76x = 158,777.88 × 64,072.64
  4. Step 4: Simplify right side
    115,063.76x = 10,173,317,945.20
  5. Step 5: Solve for x
    x = 10,173,317,945.20/115,063.76
  6. Step 6: Final answer
    x = 88,414.61

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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.