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Finding the Fourth Proportional to 50,868, 70,197.84 and 30,996

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Solution

The fourth proportional to 50,868, 70,197.84 and 30,996 is: 42,774.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,868 : 70,197.84 = 30,996 : x
  2. Step 2: Convert to fraction form
    50,868/70,197.84 = 30,996/x
  3. Step 3: Cross multiply
    50,868x = 70,197.84 × 30,996
  4. Step 4: Simplify right side
    50,868x = 2,175,852,248.64
  5. Step 5: Solve for x
    x = 2,175,852,248.64/50,868
  6. Step 6: Final answer
    x = 42,774.48

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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.