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Finding the Fourth Proportional to 68,206.47, 94,124.68 and 37,990

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Solution

The fourth proportional to 68,206.47, 94,124.68 and 37,990 is: 52,426.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,206.47 : 94,124.68 = 37,990 : x
  2. Step 2: Convert to fraction form
    68,206.47/94,124.68 = 37,990/x
  3. Step 3: Cross multiply
    68,206.47x = 94,124.68 × 37,990
  4. Step 4: Simplify right side
    68,206.47x = 3,575,796,593.20
  5. Step 5: Solve for x
    x = 3,575,796,593.20/68,206.47
  6. Step 6: Final answer
    x = 52,426.06

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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.