Home / 87,489,138.08-120,738,678.47-50,319,428.72

Finding the Fourth Proportional to 87,489,138.08, 120,738,678.47 and 50,319,428.72

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Solution

The fourth proportional to 87,489,138.08, 120,738,678.47 and 50,319,428.72 is: 69,442,921.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,489,138.08 : 120,738,678.47 = 50,319,428.72 : x
  2. Step 2: Convert to fraction form
    87,489,138.08/120,738,678.47 = 50,319,428.72/x
  3. Step 3: Cross multiply
    87,489,138.08x = 120,738,678.47 × 50,319,428.72
  4. Step 4: Simplify right side
    87,489,138.08x = 6,075,501,324,766,567
  5. Step 5: Solve for x
    x = 6,075,501,324,766,567/87,489,138.08
  6. Step 6: Final answer
    x = 69,442,921.24

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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.