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Finding the Fourth Proportional to 56,268, 84,272.76 and 28,101.60

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Solution

The fourth proportional to 56,268, 84,272.76 and 28,101.60 is: 42,087.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,268 : 84,272.76 = 28,101.60 : x
  2. Step 2: Convert to fraction form
    56,268/84,272.76 = 28,101.60/x
  3. Step 3: Cross multiply
    56,268x = 84,272.76 × 28,101.60
  4. Step 4: Simplify right side
    56,268x = 2,368,199,392.42
  5. Step 5: Solve for x
    x = 2,368,199,392.42/56,268
  6. Step 6: Final answer
    x = 42,087.85

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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.