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Finding the Fourth Proportional to 73,200.10, 109,812.30 and 28,828.30

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Solution

The fourth proportional to 73,200.10, 109,812.30 and 28,828.30 is: 43,247.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,200.10 : 109,812.30 = 28,828.30 : x
  2. Step 2: Convert to fraction form
    73,200.10/109,812.30 = 28,828.30/x
  3. Step 3: Cross multiply
    73,200.10x = 109,812.30 × 28,828.30
  4. Step 4: Simplify right side
    73,200.10x = 3,165,701,928.09
  5. Step 5: Solve for x
    x = 3,165,701,928.09/73,200.10
  6. Step 6: Final answer
    x = 43,247.24

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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.