Home / 28,129,766.76-42,201,013.50-8,961,615.72

Finding the Fourth Proportional to 28,129,766.76, 42,201,013.50 and 8,961,615.72

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Solution

The fourth proportional to 28,129,766.76, 42,201,013.50 and 8,961,615.72 is: 13,444,450.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,129,766.76 : 42,201,013.50 = 8,961,615.72 : x
  2. Step 2: Convert to fraction form
    28,129,766.76/42,201,013.50 = 8,961,615.72/x
  3. Step 3: Cross multiply
    28,129,766.76x = 42,201,013.50 × 8,961,615.72
  4. Step 4: Simplify right side
    28,129,766.76x = 378,189,265,981,532.25
  5. Step 5: Solve for x
    x = 378,189,265,981,532.25/28,129,766.76
  6. Step 6: Final answer
    x = 13,444,450.83

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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.