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Finding the Fourth Proportional to 101,687.60, 152,488.20 and 49,113.20

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Solution

The fourth proportional to 101,687.60, 152,488.20 and 49,113.20 is: 73,648.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,687.60 : 152,488.20 = 49,113.20 : x
  2. Step 2: Convert to fraction form
    101,687.60/152,488.20 = 49,113.20/x
  3. Step 3: Cross multiply
    101,687.60x = 152,488.20 × 49,113.20
  4. Step 4: Simplify right side
    101,687.60x = 7,489,183,464.24
  5. Step 5: Solve for x
    x = 7,489,183,464.24/101,687.60
  6. Step 6: Final answer
    x = 73,648.94

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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.