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Finding the Fourth Proportional to 72,084.40, 108,142.80 and 22,166.80

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Solution

The fourth proportional to 72,084.40, 108,142.80 and 22,166.80 is: 33,255.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,084.40 : 108,142.80 = 22,166.80 : x
  2. Step 2: Convert to fraction form
    72,084.40/108,142.80 = 22,166.80/x
  3. Step 3: Cross multiply
    72,084.40x = 108,142.80 × 22,166.80
  4. Step 4: Simplify right side
    72,084.40x = 2,397,179,819.04
  5. Step 5: Solve for x
    x = 2,397,179,819.04/72,084.40
  6. Step 6: Final answer
    x = 33,255.18

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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.