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Finding the Fourth Proportional to 82,984,940.40, 124,477,410.60 and 80,593,455.90

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Solution

The fourth proportional to 82,984,940.40, 124,477,410.60 and 80,593,455.90 is: 120,890,183.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,984,940.40 : 124,477,410.60 = 80,593,455.90 : x
  2. Step 2: Convert to fraction form
    82,984,940.40/124,477,410.60 = 80,593,455.90/x
  3. Step 3: Cross multiply
    82,984,940.40x = 124,477,410.60 × 80,593,455.90
  4. Step 4: Simplify right side
    82,984,940.40x = 10,032,064,701,737,292
  5. Step 5: Solve for x
    x = 10,032,064,701,737,292/82,984,940.40
  6. Step 6: Final answer
    x = 120,890,183.85

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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.