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Finding the Fourth Proportional to 64,867.74, 89,520 and 36,572.82

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Solution

The fourth proportional to 64,867.74, 89,520 and 36,572.82 is: 50,471.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,867.74 : 89,520 = 36,572.82 : x
  2. Step 2: Convert to fraction form
    64,867.74/89,520 = 36,572.82/x
  3. Step 3: Cross multiply
    64,867.74x = 89,520 × 36,572.82
  4. Step 4: Simplify right side
    64,867.74x = 3,273,998,846.40
  5. Step 5: Solve for x
    x = 3,273,998,846.40/64,867.74
  6. Step 6: Final answer
    x = 50,471.91

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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.