Home / 81,948.72-122,908.70-22,788.98

Finding the Fourth Proportional to 81,948.72, 122,908.70 and 22,788.98

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Solution

The fourth proportional to 81,948.72, 122,908.70 and 22,788.98 is: 34,179.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,948.72 : 122,908.70 = 22,788.98 : x
  2. Step 2: Convert to fraction form
    81,948.72/122,908.70 = 22,788.98/x
  3. Step 3: Cross multiply
    81,948.72x = 122,908.70 × 22,788.98
  4. Step 4: Simplify right side
    81,948.72x = 2,800,963,906.13
  5. Step 5: Solve for x
    x = 2,800,963,906.13/81,948.72
  6. Step 6: Final answer
    x = 34,179.47

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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.