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Finding the Fourth Proportional to 35,646, 49,204.46 and 20,742

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Solution

The fourth proportional to 35,646, 49,204.46 and 20,742 is: 28,631.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,646 : 49,204.46 = 20,742 : x
  2. Step 2: Convert to fraction form
    35,646/49,204.46 = 20,742/x
  3. Step 3: Cross multiply
    35,646x = 49,204.46 × 20,742
  4. Step 4: Simplify right side
    35,646x = 1,020,598,909.32
  5. Step 5: Solve for x
    x = 1,020,598,909.32/35,646
  6. Step 6: Final answer
    x = 28,631.51

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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.