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Finding the Fourth Proportional to 66,856,502.05, 100,125,320.78 and 66,856,502.05

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Solution

The fourth proportional to 66,856,502.05, 100,125,320.78 and 66,856,502.05 is: 100,125,320.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,856,502.05 : 100,125,320.78 = 66,856,502.05 : x
  2. Step 2: Convert to fraction form
    66,856,502.05/100,125,320.78 = 66,856,502.05/x
  3. Step 3: Cross multiply
    66,856,502.05x = 100,125,320.78 × 66,856,502.05
  4. Step 4: Simplify right side
    66,856,502.05x = 6,694,028,713,650,695
  5. Step 5: Solve for x
    x = 6,694,028,713,650,695/66,856,502.05
  6. Step 6: Final answer
    x = 100,125,320.78

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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.