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Finding the Fourth Proportional to 85,102,606, 127,653,911.88 and 21,277,198

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Solution

The fourth proportional to 85,102,606, 127,653,911.88 and 21,277,198 is: 31,915,797.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,102,606 : 127,653,911.88 = 21,277,198 : x
  2. Step 2: Convert to fraction form
    85,102,606/127,653,911.88 = 21,277,198/x
  3. Step 3: Cross multiply
    85,102,606x = 127,653,911.88 × 21,277,198
  4. Step 4: Simplify right side
    85,102,606x = 2,716,117,558,545,312
  5. Step 5: Solve for x
    x = 2,716,117,558,545,312/85,102,606
  6. Step 6: Final answer
    x = 31,915,797.72

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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.