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Finding the Fourth Proportional to 30,360.72, 45,541.09 and 8,173.53

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Solution

The fourth proportional to 30,360.72, 45,541.09 and 8,173.53 is: 12,260.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,360.72 : 45,541.09 = 8,173.53 : x
  2. Step 2: Convert to fraction form
    30,360.72/45,541.09 = 8,173.53/x
  3. Step 3: Cross multiply
    30,360.72x = 45,541.09 × 8,173.53
  4. Step 4: Simplify right side
    30,360.72x = 372,231,465.35
  5. Step 5: Solve for x
    x = 372,231,465.35/30,360.72
  6. Step 6: Final answer
    x = 12,260.30

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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.