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Finding the Fourth Proportional to 65,012.56, 89,715.72 and 36,717.52

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Solution

The fourth proportional to 65,012.56, 89,715.72 and 36,717.52 is: 50,669.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,012.56 : 89,715.72 = 36,717.52 : x
  2. Step 2: Convert to fraction form
    65,012.56/89,715.72 = 36,717.52/x
  3. Step 3: Cross multiply
    65,012.56x = 89,715.72 × 36,717.52
  4. Step 4: Simplify right side
    65,012.56x = 3,294,138,743.41
  5. Step 5: Solve for x
    x = 3,294,138,743.41/65,012.56
  6. Step 6: Final answer
    x = 50,669.27

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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.