Home / 82,446,438.80-123,669,658.20-81,690,611.60

Finding the Fourth Proportional to 82,446,438.80, 123,669,658.20 and 81,690,611.60

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Solution

The fourth proportional to 82,446,438.80, 123,669,658.20 and 81,690,611.60 is: 122,535,917.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,446,438.80 : 123,669,658.20 = 81,690,611.60 : x
  2. Step 2: Convert to fraction form
    82,446,438.80/123,669,658.20 = 81,690,611.60/x
  3. Step 3: Cross multiply
    82,446,438.80x = 123,669,658.20 × 81,690,611.60
  4. Step 4: Simplify right side
    82,446,438.80x = 10,102,650,014,720,954
  5. Step 5: Solve for x
    x = 10,102,650,014,720,954/82,446,438.80
  6. Step 6: Final answer
    x = 122,535,917.40

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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.