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Finding the Fourth Proportional to 56,620.54, 84,930.90 and 19,180.90

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Solution

The fourth proportional to 56,620.54, 84,930.90 and 19,180.90 is: 28,771.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,620.54 : 84,930.90 = 19,180.90 : x
  2. Step 2: Convert to fraction form
    56,620.54/84,930.90 = 19,180.90/x
  3. Step 3: Cross multiply
    56,620.54x = 84,930.90 × 19,180.90
  4. Step 4: Simplify right side
    56,620.54x = 1,629,051,099.81
  5. Step 5: Solve for x
    x = 1,629,051,099.81/56,620.54
  6. Step 6: Final answer
    x = 28,771.38

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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.