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Finding the Fourth Proportional to 109,049.20, 163,525.20 and 42,467.20

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Solution

The fourth proportional to 109,049.20, 163,525.20 and 42,467.20 is: 63,681.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,049.20 : 163,525.20 = 42,467.20 : x
  2. Step 2: Convert to fraction form
    109,049.20/163,525.20 = 42,467.20/x
  3. Step 3: Cross multiply
    109,049.20x = 163,525.20 × 42,467.20
  4. Step 4: Simplify right side
    109,049.20x = 6,944,457,373.44
  5. Step 5: Solve for x
    x = 6,944,457,373.44/109,049.20
  6. Step 6: Final answer
    x = 63,681.87

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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.