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Finding the Fourth Proportional to 73,812.38, 110,718.56 and 18,408.38

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Solution

The fourth proportional to 73,812.38, 110,718.56 and 18,408.38 is: 27,612.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,812.38 : 110,718.56 = 18,408.38 : x
  2. Step 2: Convert to fraction form
    73,812.38/110,718.56 = 18,408.38/x
  3. Step 3: Cross multiply
    73,812.38x = 110,718.56 × 18,408.38
  4. Step 4: Simplify right side
    73,812.38x = 2,038,148,817.96
  5. Step 5: Solve for x
    x = 2,038,148,817.96/73,812.38
  6. Step 6: Final answer
    x = 27,612.56

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1.5x scale

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.