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Finding the Fourth Proportional to 55,200.78, 82,802.54 and 20,140.44

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Solution

The fourth proportional to 55,200.78, 82,802.54 and 20,140.44 is: 30,211.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,200.78 : 82,802.54 = 20,140.44 : x
  2. Step 2: Convert to fraction form
    55,200.78/82,802.54 = 20,140.44/x
  3. Step 3: Cross multiply
    55,200.78x = 82,802.54 × 20,140.44
  4. Step 4: Simplify right side
    55,200.78x = 1,667,679,356.54
  5. Step 5: Solve for x
    x = 1,667,679,356.54/55,200.78
  6. Step 6: Final answer
    x = 30,211.15

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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.