Home / 81,187,238.45-111,930,005.00-64,497,355.11

Finding the Fourth Proportional to 81,187,238.45, 111,930,005.00 and 64,497,355.11

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Solution

The fourth proportional to 81,187,238.45, 111,930,005.00 and 64,497,355.11 is: 88,920,246.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,187,238.45 : 111,930,005.00 = 64,497,355.11 : x
  2. Step 2: Convert to fraction form
    81,187,238.45/111,930,005.00 = 64,497,355.11/x
  3. Step 3: Cross multiply
    81,187,238.45x = 111,930,005.00 × 64,497,355.11
  4. Step 4: Simplify right side
    81,187,238.45x = 7,219,189,280,110,319
  5. Step 5: Solve for x
    x = 7,219,189,280,110,319/81,187,238.45
  6. Step 6: Final answer
    x = 88,920,246.80

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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.