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Finding the Fourth Proportional to 108,554.40, 162,860.40 and 38,426.40

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Solution

The fourth proportional to 108,554.40, 162,860.40 and 38,426.40 is: 57,649.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,554.40 : 162,860.40 = 38,426.40 : x
  2. Step 2: Convert to fraction form
    108,554.40/162,860.40 = 38,426.40/x
  3. Step 3: Cross multiply
    108,554.40x = 162,860.40 × 38,426.40
  4. Step 4: Simplify right side
    108,554.40x = 6,258,138,874.56
  5. Step 5: Solve for x
    x = 6,258,138,874.56/108,554.40
  6. Step 6: Final answer
    x = 57,649.79

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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.