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Finding the Fourth Proportional to 64,718.72, 89,311.64 and 36,424.44

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Solution

The fourth proportional to 64,718.72, 89,311.64 and 36,424.44 is: 50,265.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,718.72 : 89,311.64 = 36,424.44 : x
  2. Step 2: Convert to fraction form
    64,718.72/89,311.64 = 36,424.44/x
  3. Step 3: Cross multiply
    64,718.72x = 89,311.64 × 36,424.44
  4. Step 4: Simplify right side
    64,718.72x = 3,253,126,472.48
  5. Step 5: Solve for x
    x = 3,253,126,472.48/64,718.72
  6. Step 6: Final answer
    x = 50,265.62

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1.5x scale

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.