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Finding the Fourth Proportional to 143,879.72, 215,841.77 and 49,087.70

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Solution

The fourth proportional to 143,879.72, 215,841.77 and 49,087.70 is: 73,639.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,879.72 : 215,841.77 = 49,087.70 : x
  2. Step 2: Convert to fraction form
    143,879.72/215,841.77 = 49,087.70/x
  3. Step 3: Cross multiply
    143,879.72x = 215,841.77 × 49,087.70
  4. Step 4: Simplify right side
    143,879.72x = 10,595,176,053.23
  5. Step 5: Solve for x
    x = 10,595,176,053.23/143,879.72
  6. Step 6: Final answer
    x = 73,639.12

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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.