Home / 68,185.48-102,294.31-21,438.35

Finding the Fourth Proportional to 68,185.48, 102,294.31 and 21,438.35

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Solution

The fourth proportional to 68,185.48, 102,294.31 and 21,438.35 is: 32,162.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,185.48 : 102,294.31 = 21,438.35 : x
  2. Step 2: Convert to fraction form
    68,185.48/102,294.31 = 21,438.35/x
  3. Step 3: Cross multiply
    68,185.48x = 102,294.31 × 21,438.35
  4. Step 4: Simplify right side
    68,185.48x = 2,193,021,220.79
  5. Step 5: Solve for x
    x = 2,193,021,220.79/68,185.48
  6. Step 6: Final answer
    x = 32,162.59

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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.