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Finding the Fourth Proportional to 79,262.78, 109,390.46 and 45,276.35

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Solution

The fourth proportional to 79,262.78, 109,390.46 and 45,276.35 is: 62,485.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,262.78 : 109,390.46 = 45,276.35 : x
  2. Step 2: Convert to fraction form
    79,262.78/109,390.46 = 45,276.35/x
  3. Step 3: Cross multiply
    79,262.78x = 109,390.46 × 45,276.35
  4. Step 4: Simplify right side
    79,262.78x = 4,952,800,753.62
  5. Step 5: Solve for x
    x = 4,952,800,753.62/79,262.78
  6. Step 6: Final answer
    x = 62,485.83

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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.