Home / 81,187,188.48-111,929,936.15-64,497,305.07

Finding the Fourth Proportional to 81,187,188.48, 111,929,936.15 and 64,497,305.07

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Solution

The fourth proportional to 81,187,188.48, 111,929,936.15 and 64,497,305.07 is: 88,920,177.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,187,188.48 : 111,929,936.15 = 64,497,305.07 : x
  2. Step 2: Convert to fraction form
    81,187,188.48/111,929,936.15 = 64,497,305.07/x
  3. Step 3: Cross multiply
    81,187,188.48x = 111,929,936.15 × 64,497,305.07
  4. Step 4: Simplify right side
    81,187,188.48x = 7,219,179,238,009,685
  5. Step 5: Solve for x
    x = 7,219,179,238,009,685/81,187,188.48
  6. Step 6: Final answer
    x = 88,920,177.84

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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.