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Finding the Fourth Proportional to 68,737.24, 103,145.54 and 37,147.40

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Solution

The fourth proportional to 68,737.24, 103,145.54 and 37,147.40 is: 55,742.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,737.24 : 103,145.54 = 37,147.40 : x
  2. Step 2: Convert to fraction form
    68,737.24/103,145.54 = 37,147.40/x
  3. Step 3: Cross multiply
    68,737.24x = 103,145.54 × 37,147.40
  4. Step 4: Simplify right side
    68,737.24x = 3,831,588,632.60
  5. Step 5: Solve for x
    x = 3,831,588,632.60/68,737.24
  6. Step 6: Final answer
    x = 55,742.54

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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.