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Finding the Fourth Proportional to 65,865.92, 98,623.92 and 51,491.12

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Solution

The fourth proportional to 65,865.92, 98,623.92 and 51,491.12 is: 77,099.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,865.92 : 98,623.92 = 51,491.12 : x
  2. Step 2: Convert to fraction form
    65,865.92/98,623.92 = 51,491.12/x
  3. Step 3: Cross multiply
    65,865.92x = 98,623.92 × 51,491.12
  4. Step 4: Simplify right side
    65,865.92x = 5,078,256,099.59
  5. Step 5: Solve for x
    x = 5,078,256,099.59/65,865.92
  6. Step 6: Final answer
    x = 77,099.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.