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Finding the Fourth Proportional to 86,500.70, 119,371.83 and 50,711.90

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Solution

The fourth proportional to 86,500.70, 119,371.83 and 50,711.90 is: 69,982.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,500.70 : 119,371.83 = 50,711.90 : x
  2. Step 2: Convert to fraction form
    86,500.70/119,371.83 = 50,711.90/x
  3. Step 3: Cross multiply
    86,500.70x = 119,371.83 × 50,711.90
  4. Step 4: Simplify right side
    86,500.70x = 6,053,572,305.78
  5. Step 5: Solve for x
    x = 6,053,572,305.78/86,500.70
  6. Step 6: Final answer
    x = 69,982.93

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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.