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Finding the Fourth Proportional to 55,269.60, 82,894.80 and 20,191.20

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Solution

The fourth proportional to 55,269.60, 82,894.80 and 20,191.20 is: 30,283.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,269.60 : 82,894.80 = 20,191.20 : x
  2. Step 2: Convert to fraction form
    55,269.60/82,894.80 = 20,191.20/x
  3. Step 3: Cross multiply
    55,269.60x = 82,894.80 × 20,191.20
  4. Step 4: Simplify right side
    55,269.60x = 1,673,745,485.76
  5. Step 5: Solve for x
    x = 1,673,745,485.76/55,269.60
  6. Step 6: Final answer
    x = 30,283.29

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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.