Home / 81,187,727.76-111,930,680.76-64,497,843.84

Finding the Fourth Proportional to 81,187,727.76, 111,930,680.76 and 64,497,843.84

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Solution

The fourth proportional to 81,187,727.76, 111,930,680.76 and 64,497,843.84 is: 88,920,921.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,187,727.76 : 111,930,680.76 = 64,497,843.84 : x
  2. Step 2: Convert to fraction form
    81,187,727.76/111,930,680.76 = 64,497,843.84/x
  3. Step 3: Cross multiply
    81,187,727.76x = 111,930,680.76 × 64,497,843.84
  4. Step 4: Simplify right side
    81,187,727.76x = 7,219,287,568,563,373
  5. Step 5: Solve for x
    x = 7,219,287,568,563,373/81,187,727.76
  6. Step 6: Final answer
    x = 88,920,921.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.