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Finding the Fourth Proportional to 49,728.72, 74,606.02 and 30,133.20

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Solution

The fourth proportional to 49,728.72, 74,606.02 and 30,133.20 is: 45,207.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,728.72 : 74,606.02 = 30,133.20 : x
  2. Step 2: Convert to fraction form
    49,728.72/74,606.02 = 30,133.20/x
  3. Step 3: Cross multiply
    49,728.72x = 74,606.02 × 30,133.20
  4. Step 4: Simplify right side
    49,728.72x = 2,248,118,121.86
  5. Step 5: Solve for x
    x = 2,248,118,121.86/49,728.72
  6. Step 6: Final answer
    x = 45,207.64

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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.