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Finding the Fourth Proportional to 68,835.60, 103,107.60 and 47,752.92

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Solution

The fourth proportional to 68,835.60, 103,107.60 and 47,752.92 is: 71,528.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,835.60 : 103,107.60 = 47,752.92 : x
  2. Step 2: Convert to fraction form
    68,835.60/103,107.60 = 47,752.92/x
  3. Step 3: Cross multiply
    68,835.60x = 103,107.60 × 47,752.92
  4. Step 4: Simplify right side
    68,835.60x = 4,923,688,974.19
  5. Step 5: Solve for x
    x = 4,923,688,974.19/68,835.60
  6. Step 6: Final answer
    x = 71,528.24

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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.