Home / 68,441.20-102,564.60-47,640.40

Finding the Fourth Proportional to 68,441.20, 102,564.60 and 47,640.40

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Solution

The fourth proportional to 68,441.20, 102,564.60 and 47,640.40 is: 71,392.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,441.20 : 102,564.60 = 47,640.40 : x
  2. Step 2: Convert to fraction form
    68,441.20/102,564.60 = 47,640.40/x
  3. Step 3: Cross multiply
    68,441.20x = 102,564.60 × 47,640.40
  4. Step 4: Simplify right side
    68,441.20x = 4,886,218,569.84
  5. Step 5: Solve for x
    x = 4,886,218,569.84/68,441.20
  6. Step 6: Final answer
    x = 71,392.94

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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.