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Finding the Fourth Proportional to 86,760, 119,750.70 and 49,056.12

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Solution

The fourth proportional to 86,760, 119,750.70 and 49,056.12 is: 67,709.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,760 : 119,750.70 = 49,056.12 : x
  2. Step 2: Convert to fraction form
    86,760/119,750.70 = 49,056.12/x
  3. Step 3: Cross multiply
    86,760x = 119,750.70 × 49,056.12
  4. Step 4: Simplify right side
    86,760x = 5,874,504,709.28
  5. Step 5: Solve for x
    x = 5,874,504,709.28/86,760
  6. Step 6: Final answer
    x = 67,709.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.