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Finding the Fourth Proportional to 73,485.88, 110,229.72 and 20,895.28

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Solution

The fourth proportional to 73,485.88, 110,229.72 and 20,895.28 is: 31,343.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,485.88 : 110,229.72 = 20,895.28 : x
  2. Step 2: Convert to fraction form
    73,485.88/110,229.72 = 20,895.28/x
  3. Step 3: Cross multiply
    73,485.88x = 110,229.72 × 20,895.28
  4. Step 4: Simplify right side
    73,485.88x = 2,303,280,863.72
  5. Step 5: Solve for x
    x = 2,303,280,863.72/73,485.88
  6. Step 6: Final answer
    x = 31,343.18

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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.