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Finding the Fourth Proportional to 109,069.20, 163,582.20 and 52,909.20

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Solution

The fourth proportional to 109,069.20, 163,582.20 and 52,909.20 is: 79,353.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,069.20 : 163,582.20 = 52,909.20 : x
  2. Step 2: Convert to fraction form
    109,069.20/163,582.20 = 52,909.20/x
  3. Step 3: Cross multiply
    109,069.20x = 163,582.20 × 52,909.20
  4. Step 4: Simplify right side
    109,069.20x = 8,655,003,336.24
  5. Step 5: Solve for x
    x = 8,655,003,336.24/109,069.20
  6. Step 6: Final answer
    x = 79,353.32

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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.