Home / 45,456.10-68,191.54-13,438.42

Finding the Fourth Proportional to 45,456.10, 68,191.54 and 13,438.42

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Solution

The fourth proportional to 45,456.10, 68,191.54 and 13,438.42 is: 20,159.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,456.10 : 68,191.54 = 13,438.42 : x
  2. Step 2: Convert to fraction form
    45,456.10/68,191.54 = 13,438.42/x
  3. Step 3: Cross multiply
    45,456.10x = 68,191.54 × 13,438.42
  4. Step 4: Simplify right side
    45,456.10x = 916,386,554.97
  5. Step 5: Solve for x
    x = 916,386,554.97/45,456.10
  6. Step 6: Final answer
    x = 20,159.81

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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.