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Finding the Fourth Proportional to 108,644.20, 162,917.70 and 42,062.20

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Solution

The fourth proportional to 108,644.20, 162,917.70 and 42,062.20 is: 63,074.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,644.20 : 162,917.70 = 42,062.20 : x
  2. Step 2: Convert to fraction form
    108,644.20/162,917.70 = 42,062.20/x
  3. Step 3: Cross multiply
    108,644.20x = 162,917.70 × 42,062.20
  4. Step 4: Simplify right side
    108,644.20x = 6,852,676,880.94
  5. Step 5: Solve for x
    x = 6,852,676,880.94/108,644.20
  6. Step 6: Final answer
    x = 63,074.48

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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.