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Finding the Fourth Proportional to 64,811.52, 89,439.12 and 36,522

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Solution

The fourth proportional to 64,811.52, 89,439.12 and 36,522 is: 50,399.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,811.52 : 89,439.12 = 36,522 : x
  2. Step 2: Convert to fraction form
    64,811.52/89,439.12 = 36,522/x
  3. Step 3: Cross multiply
    64,811.52x = 89,439.12 × 36,522
  4. Step 4: Simplify right side
    64,811.52x = 3,266,495,540.64
  5. Step 5: Solve for x
    x = 3,266,495,540.64/64,811.52
  6. Step 6: Final answer
    x = 50,399.92

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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.