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Finding the Fourth Proportional to 8,361,143.80, 12,551,046.90 and 7,812,935.80

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Solution

The fourth proportional to 8,361,143.80, 12,551,046.90 and 7,812,935.80 is: 11,728,123.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,361,143.80 : 12,551,046.90 = 7,812,935.80 : x
  2. Step 2: Convert to fraction form
    8,361,143.80/12,551,046.90 = 7,812,935.80/x
  3. Step 3: Cross multiply
    8,361,143.80x = 12,551,046.90 × 7,812,935.80
  4. Step 4: Simplify right side
    8,361,143.80x = 98,060,523,652,489.02
  5. Step 5: Solve for x
    x = 98,060,523,652,489.02/8,361,143.80
  6. Step 6: Final answer
    x = 11,728,123.09

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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.