Home / 87,489,139.10-120,738,679.86-50,319,429.72

Finding the Fourth Proportional to 87,489,139.10, 120,738,679.86 and 50,319,429.72

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Solution

The fourth proportional to 87,489,139.10, 120,738,679.86 and 50,319,429.72 is: 69,442,922.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,489,139.10 : 120,738,679.86 = 50,319,429.72 : x
  2. Step 2: Convert to fraction form
    87,489,139.10/120,738,679.86 = 50,319,429.72/x
  3. Step 3: Cross multiply
    87,489,139.10x = 120,738,679.86 × 50,319,429.72
  4. Step 4: Simplify right side
    87,489,139.10x = 6,075,501,515,700,849
  5. Step 5: Solve for x
    x = 6,075,501,515,700,849/87,489,139.10
  6. Step 6: Final answer
    x = 69,442,922.61

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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.