Home / 68,606,912.40-102,815,890.20-45,512,192.40

Finding the Fourth Proportional to 68,606,912.40, 102,815,890.20 and 45,512,192.40

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Solution

The fourth proportional to 68,606,912.40, 102,815,890.20 and 45,512,192.40 is: 68,205,613.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,606,912.40 : 102,815,890.20 = 45,512,192.40 : x
  2. Step 2: Convert to fraction form
    68,606,912.40/102,815,890.20 = 45,512,192.40/x
  3. Step 3: Cross multiply
    68,606,912.40x = 102,815,890.20 × 45,512,192.40
  4. Step 4: Simplify right side
    68,606,912.40x = 4,679,376,576,559,674
  5. Step 5: Solve for x
    x = 4,679,376,576,559,674/68,606,912.40
  6. Step 6: Final answer
    x = 68,205,613.88

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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.