Home / 87,489,138.33-120,738,678.81-50,319,428.97

Finding the Fourth Proportional to 87,489,138.33, 120,738,678.81 and 50,319,428.97

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Solution

The fourth proportional to 87,489,138.33, 120,738,678.81 and 50,319,428.97 is: 69,442,921.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,489,138.33 : 120,738,678.81 = 50,319,428.97 : x
  2. Step 2: Convert to fraction form
    87,489,138.33/120,738,678.81 = 50,319,428.97/x
  3. Step 3: Cross multiply
    87,489,138.33x = 120,738,678.81 × 50,319,428.97
  4. Step 4: Simplify right side
    87,489,138.33x = 6,075,501,372,311,439
  5. Step 5: Solve for x
    x = 6,075,501,372,311,439/87,489,138.33
  6. Step 6: Final answer
    x = 69,442,921.58

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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.