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Finding the Fourth Proportional to 72,257.76, 108,246.36 and 53,247.86

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Solution

The fourth proportional to 72,257.76, 108,246.36 and 53,247.86 is: 79,768.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,257.76 : 108,246.36 = 53,247.86 : x
  2. Step 2: Convert to fraction form
    72,257.76/108,246.36 = 53,247.86/x
  3. Step 3: Cross multiply
    72,257.76x = 108,246.36 × 53,247.86
  4. Step 4: Simplify right side
    72,257.76x = 5,763,887,022.79
  5. Step 5: Solve for x
    x = 5,763,887,022.79/72,257.76
  6. Step 6: Final answer
    x = 79,768.42

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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.