Home / 85,682,267.91-128,527,535.30-28,173,265.83

Finding the Fourth Proportional to 85,682,267.91, 128,527,535.30 and 28,173,265.83

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Solution

The fourth proportional to 85,682,267.91, 128,527,535.30 and 28,173,265.83 is: 42,261,257.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,682,267.91 : 128,527,535.30 = 28,173,265.83 : x
  2. Step 2: Convert to fraction form
    85,682,267.91/128,527,535.30 = 28,173,265.83/x
  3. Step 3: Cross multiply
    85,682,267.91x = 128,527,535.30 × 28,173,265.83
  4. Step 4: Simplify right side
    85,682,267.91x = 3,621,040,418,340,742.50
  5. Step 5: Solve for x
    x = 3,621,040,418,340,742.50/85,682,267.91
  6. Step 6: Final answer
    x = 42,261,257.86

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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.