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Finding the Fourth Proportional to 72,125.60, 108,169.20 and 22,205.60

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Solution

The fourth proportional to 72,125.60, 108,169.20 and 22,205.60 is: 33,302.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,125.60 : 108,169.20 = 22,205.60 : x
  2. Step 2: Convert to fraction form
    72,125.60/108,169.20 = 22,205.60/x
  3. Step 3: Cross multiply
    72,125.60x = 108,169.20 × 22,205.60
  4. Step 4: Simplify right side
    72,125.60x = 2,401,961,987.52
  5. Step 5: Solve for x
    x = 2,401,961,987.52/72,125.60
  6. Step 6: Final answer
    x = 33,302.49

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1.5x scale

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.