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Finding the Fourth Proportional to 108,580.20, 162,918.90 and 49,385.40

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Solution

The fourth proportional to 108,580.20, 162,918.90 and 49,385.40 is: 74,100.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,580.20 : 162,918.90 = 49,385.40 : x
  2. Step 2: Convert to fraction form
    108,580.20/162,918.90 = 49,385.40/x
  3. Step 3: Cross multiply
    108,580.20x = 162,918.90 × 49,385.40
  4. Step 4: Simplify right side
    108,580.20x = 8,045,815,044.06
  5. Step 5: Solve for x
    x = 8,045,815,044.06/108,580.20
  6. Step 6: Final answer
    x = 74,100.20

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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.