Home / 81,905.69-122,864.13-27,848.36

Finding the Fourth Proportional to 81,905.69, 122,864.13 and 27,848.36

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Solution

The fourth proportional to 81,905.69, 122,864.13 and 27,848.36 is: 41,774.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,905.69 : 122,864.13 = 27,848.36 : x
  2. Step 2: Convert to fraction form
    81,905.69/122,864.13 = 27,848.36/x
  3. Step 3: Cross multiply
    81,905.69x = 122,864.13 × 27,848.36
  4. Step 4: Simplify right side
    81,905.69x = 3,421,564,830.49
  5. Step 5: Solve for x
    x = 3,421,564,830.49/81,905.69
  6. Step 6: Final answer
    x = 41,774.44

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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.