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Finding the Fourth Proportional to 64,408.69, 88,889.15 and 35,731.18

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Solution

The fourth proportional to 64,408.69, 88,889.15 and 35,731.18 is: 49,311.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,408.69 : 88,889.15 = 35,731.18 : x
  2. Step 2: Convert to fraction form
    64,408.69/88,889.15 = 35,731.18/x
  3. Step 3: Cross multiply
    64,408.69x = 88,889.15 × 35,731.18
  4. Step 4: Simplify right side
    64,408.69x = 3,176,114,218.70
  5. Step 5: Solve for x
    x = 3,176,114,218.70/64,408.69
  6. Step 6: Final answer
    x = 49,311.89

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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.