Home / 84,607,079.20-126,910,618.80-20,781,671.20

Finding the Fourth Proportional to 84,607,079.20, 126,910,618.80 and 20,781,671.20

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Solution

The fourth proportional to 84,607,079.20, 126,910,618.80 and 20,781,671.20 is: 31,172,506.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,607,079.20 : 126,910,618.80 = 20,781,671.20 : x
  2. Step 2: Convert to fraction form
    84,607,079.20/126,910,618.80 = 20,781,671.20/x
  3. Step 3: Cross multiply
    84,607,079.20x = 126,910,618.80 × 20,781,671.20
  4. Step 4: Simplify right side
    84,607,079.20x = 2,637,414,751,690,138.50
  5. Step 5: Solve for x
    x = 2,637,414,751,690,138.50/84,607,079.20
  6. Step 6: Final answer
    x = 31,172,506.80

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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.