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Finding the Fourth Proportional to 64,851.86, 89,495.42 and 36,171.56

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Solution

The fourth proportional to 64,851.86, 89,495.42 and 36,171.56 is: 49,916.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,851.86 : 89,495.42 = 36,171.56 : x
  2. Step 2: Convert to fraction form
    64,851.86/89,495.42 = 36,171.56/x
  3. Step 3: Cross multiply
    64,851.86x = 89,495.42 × 36,171.56
  4. Step 4: Simplify right side
    64,851.86x = 3,237,188,325.92
  5. Step 5: Solve for x
    x = 3,237,188,325.92/64,851.86
  6. Step 6: Final answer
    x = 49,916.67

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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.