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Finding the Fourth Proportional to 35,442.54, 48,917.77 and 20,345.40

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Solution

The fourth proportional to 35,442.54, 48,917.77 and 20,345.40 is: 28,080.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,442.54 : 48,917.77 = 20,345.40 : x
  2. Step 2: Convert to fraction form
    35,442.54/48,917.77 = 20,345.40/x
  3. Step 3: Cross multiply
    35,442.54x = 48,917.77 × 20,345.40
  4. Step 4: Simplify right side
    35,442.54x = 995,251,546.89
  5. Step 5: Solve for x
    x = 995,251,546.89/35,442.54
  6. Step 6: Final answer
    x = 28,080.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.