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Finding the Fourth Proportional to 79,745.92, 110,037.36 and 45,285.28

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Solution

The fourth proportional to 79,745.92, 110,037.36 and 45,285.28 is: 62,486.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,745.92 : 110,037.36 = 45,285.28 : x
  2. Step 2: Convert to fraction form
    79,745.92/110,037.36 = 45,285.28/x
  3. Step 3: Cross multiply
    79,745.92x = 110,037.36 × 45,285.28
  4. Step 4: Simplify right side
    79,745.92x = 4,983,072,658.06
  5. Step 5: Solve for x
    x = 4,983,072,658.06/79,745.92
  6. Step 6: Final answer
    x = 62,486.87

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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.