Home / 85,452,396.72-128,178,596.67-20,755,765.83

Finding the Fourth Proportional to 85,452,396.72, 128,178,596.67 and 20,755,765.83

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Solution

The fourth proportional to 85,452,396.72, 128,178,596.67 and 20,755,765.83 is: 31,133,649.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,452,396.72 : 128,178,596.67 = 20,755,765.83 : x
  2. Step 2: Convert to fraction form
    85,452,396.72/128,178,596.67 = 20,755,765.83/x
  3. Step 3: Cross multiply
    85,452,396.72x = 128,178,596.67 × 20,755,765.83
  4. Step 4: Simplify right side
    85,452,396.72x = 2,660,444,936,900,537.50
  5. Step 5: Solve for x
    x = 2,660,444,936,900,537.50/85,452,396.72
  6. Step 6: Final answer
    x = 31,133,649.13

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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.