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Finding the Fourth Proportional to 35,249.63, 48,648.80 and 20,345.63

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Solution

The fourth proportional to 35,249.63, 48,648.80 and 20,345.63 is: 28,079.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,249.63 : 48,648.80 = 20,345.63 : x
  2. Step 2: Convert to fraction form
    35,249.63/48,648.80 = 20,345.63/x
  3. Step 3: Cross multiply
    35,249.63x = 48,648.80 × 20,345.63
  4. Step 4: Simplify right side
    35,249.63x = 989,790,292.36
  5. Step 5: Solve for x
    x = 989,790,292.36/35,249.63
  6. Step 6: Final answer
    x = 28,079.46

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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.