Home / 84,607,073.70-126,910,610.55-20,781,665.70

Finding the Fourth Proportional to 84,607,073.70, 126,910,610.55 and 20,781,665.70

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Solution

The fourth proportional to 84,607,073.70, 126,910,610.55 and 20,781,665.70 is: 31,172,498.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,607,073.70 : 126,910,610.55 = 20,781,665.70 : x
  2. Step 2: Convert to fraction form
    84,607,073.70/126,910,610.55 = 20,781,665.70/x
  3. Step 3: Cross multiply
    84,607,073.70x = 126,910,610.55 × 20,781,665.70
  4. Step 4: Simplify right side
    84,607,073.70x = 2,637,413,882,232,993
  5. Step 5: Solve for x
    x = 2,637,413,882,232,993/84,607,073.70
  6. Step 6: Final answer
    x = 31,172,498.55

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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.