Home / 213,787.62-320,731.33-61,987.87

Finding the Fourth Proportional to 213,787.62, 320,731.33 and 61,987.87

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Solution

The fourth proportional to 213,787.62, 320,731.33 and 61,987.87 is: 92,996.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,787.62 : 320,731.33 = 61,987.87 : x
  2. Step 2: Convert to fraction form
    213,787.62/320,731.33 = 61,987.87/x
  3. Step 3: Cross multiply
    213,787.62x = 320,731.33 × 61,987.87
  4. Step 4: Simplify right side
    213,787.62x = 19,881,451,988.97
  5. Step 5: Solve for x
    x = 19,881,451,988.97/213,787.62
  6. Step 6: Final answer
    x = 92,996.27

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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.