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Finding the Fourth Proportional to 82,944,285.80, 124,416,428.70 and 81,174,813.80

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Solution

The fourth proportional to 82,944,285.80, 124,416,428.70 and 81,174,813.80 is: 121,762,220.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,944,285.80 : 124,416,428.70 = 81,174,813.80 : x
  2. Step 2: Convert to fraction form
    82,944,285.80/124,416,428.70 = 81,174,813.80/x
  3. Step 3: Cross multiply
    82,944,285.80x = 124,416,428.70 × 81,174,813.80
  4. Step 4: Simplify right side
    82,944,285.80x = 10,099,480,433,383,476
  5. Step 5: Solve for x
    x = 10,099,480,433,383,476/82,944,285.80
  6. Step 6: Final answer
    x = 121,762,220.70

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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.