Home / 81,787.41-122,666.90-26,383.41

Finding the Fourth Proportional to 81,787.41, 122,666.90 and 26,383.41

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Solution

The fourth proportional to 81,787.41, 122,666.90 and 26,383.41 is: 39,570.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,787.41 : 122,666.90 = 26,383.41 : x
  2. Step 2: Convert to fraction form
    81,787.41/122,666.90 = 26,383.41/x
  3. Step 3: Cross multiply
    81,787.41x = 122,666.90 × 26,383.41
  4. Step 4: Simplify right side
    81,787.41x = 3,236,370,984.21
  5. Step 5: Solve for x
    x = 3,236,370,984.21/81,787.41
  6. Step 6: Final answer
    x = 39,570.53

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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.