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Finding the Fourth Proportional to 70,813.58, 106,121.25 and 53,262.86

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Solution

The fourth proportional to 70,813.58, 106,121.25 and 53,262.86 is: 79,819.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,813.58 : 106,121.25 = 53,262.86 : x
  2. Step 2: Convert to fraction form
    70,813.58/106,121.25 = 53,262.86/x
  3. Step 3: Cross multiply
    70,813.58x = 106,121.25 × 53,262.86
  4. Step 4: Simplify right side
    70,813.58x = 5,652,321,281.78
  5. Step 5: Solve for x
    x = 5,652,321,281.78/70,813.58
  6. Step 6: Final answer
    x = 79,819.74

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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.