Home / 65,787.40-98,682-21,414.34

Finding the Fourth Proportional to 65,787.40, 98,682 and 21,414.34

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Solution

The fourth proportional to 65,787.40, 98,682 and 21,414.34 is: 32,121.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,787.40 : 98,682 = 21,414.34 : x
  2. Step 2: Convert to fraction form
    65,787.40/98,682 = 21,414.34/x
  3. Step 3: Cross multiply
    65,787.40x = 98,682 × 21,414.34
  4. Step 4: Simplify right side
    65,787.40x = 2,113,209,899.88
  5. Step 5: Solve for x
    x = 2,113,209,899.88/65,787.40
  6. Step 6: Final answer
    x = 32,121.80

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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.