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Finding the Fourth Proportional to 108,436.80, 162,655.20 and 38,323.20

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Solution

The fourth proportional to 108,436.80, 162,655.20 and 38,323.20 is: 57,484.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,436.80 : 162,655.20 = 38,323.20 : x
  2. Step 2: Convert to fraction form
    108,436.80/162,655.20 = 38,323.20/x
  3. Step 3: Cross multiply
    108,436.80x = 162,655.20 × 38,323.20
  4. Step 4: Simplify right side
    108,436.80x = 6,233,467,760.64
  5. Step 5: Solve for x
    x = 6,233,467,760.64/108,436.80
  6. Step 6: Final answer
    x = 57,484.80

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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.