Home / 68,438,121.50-102,661,905.63-19,916,377.22

Finding the Fourth Proportional to 68,438,121.50, 102,661,905.63 and 19,916,377.22

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Solution

The fourth proportional to 68,438,121.50, 102,661,905.63 and 19,916,377.22 is: 29,875,940.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,438,121.50 : 102,661,905.63 = 19,916,377.22 : x
  2. Step 2: Convert to fraction form
    68,438,121.50/102,661,905.63 = 19,916,377.22/x
  3. Step 3: Cross multiply
    68,438,121.50x = 102,661,905.63 × 19,916,377.22
  4. Step 4: Simplify right side
    68,438,121.50x = 2,044,653,238,651,121.50
  5. Step 5: Solve for x
    x = 2,044,653,238,651,121.50/68,438,121.50
  6. Step 6: Final answer
    x = 29,875,940.39

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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.