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Finding the Fourth Proportional to 50,857.49, 70,187.48 and 28,203.58

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Solution

The fourth proportional to 50,857.49, 70,187.48 and 28,203.58 is: 38,923.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,857.49 : 70,187.48 = 28,203.58 : x
  2. Step 2: Convert to fraction form
    50,857.49/70,187.48 = 28,203.58/x
  3. Step 3: Cross multiply
    50,857.49x = 70,187.48 × 28,203.58
  4. Step 4: Simplify right side
    50,857.49x = 1,979,538,102.22
  5. Step 5: Solve for x
    x = 1,979,538,102.22/50,857.49
  6. Step 6: Final answer
    x = 38,923.24

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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.