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Finding the Fourth Proportional to 64,872.78, 89,575.11 and 50,765.82

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Solution

The fourth proportional to 64,872.78, 89,575.11 and 50,765.82 is: 70,096.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,872.78 : 89,575.11 = 50,765.82 : x
  2. Step 2: Convert to fraction form
    64,872.78/89,575.11 = 50,765.82/x
  3. Step 3: Cross multiply
    64,872.78x = 89,575.11 × 50,765.82
  4. Step 4: Simplify right side
    64,872.78x = 4,547,353,910.74
  5. Step 5: Solve for x
    x = 4,547,353,910.74/64,872.78
  6. Step 6: Final answer
    x = 70,096.49

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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.