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Finding the Fourth Proportional to 45,381.70, 68,083.07 and 15,394.34

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Solution

The fourth proportional to 45,381.70, 68,083.07 and 15,394.34 is: 23,095.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,381.70 : 68,083.07 = 15,394.34 : x
  2. Step 2: Convert to fraction form
    45,381.70/68,083.07 = 15,394.34/x
  3. Step 3: Cross multiply
    45,381.70x = 68,083.07 × 15,394.34
  4. Step 4: Simplify right side
    45,381.70x = 1,048,094,021.06
  5. Step 5: Solve for x
    x = 1,048,094,021.06/45,381.70
  6. Step 6: Final answer
    x = 23,095.08

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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.