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Finding the Fourth Proportional to 109,065.20, 163,576.20 and 52,905.20

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Solution

The fourth proportional to 109,065.20, 163,576.20 and 52,905.20 is: 79,347.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,065.20 : 163,576.20 = 52,905.20 : x
  2. Step 2: Convert to fraction form
    109,065.20/163,576.20 = 52,905.20/x
  3. Step 3: Cross multiply
    109,065.20x = 163,576.20 × 52,905.20
  4. Step 4: Simplify right side
    109,065.20x = 8,654,031,576.24
  5. Step 5: Solve for x
    x = 8,654,031,576.24/109,065.20
  6. Step 6: Final answer
    x = 79,347.32

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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.