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Finding the Fourth Proportional to 108,511.20, 162,815.40 and 49,316.40

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Solution

The fourth proportional to 108,511.20, 162,815.40 and 49,316.40 is: 73,996.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,511.20 : 162,815.40 = 49,316.40 : x
  2. Step 2: Convert to fraction form
    108,511.20/162,815.40 = 49,316.40/x
  3. Step 3: Cross multiply
    108,511.20x = 162,815.40 × 49,316.40
  4. Step 4: Simplify right side
    108,511.20x = 8,029,469,392.56
  5. Step 5: Solve for x
    x = 8,029,469,392.56/108,511.20
  6. Step 6: Final answer
    x = 73,996.69

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1.5x scale

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.