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Finding the Fourth Proportional to 68,121.42, 94,005 and 37,907.88

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Solution

The fourth proportional to 68,121.42, 94,005 and 37,907.88 is: 52,311.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,121.42 : 94,005 = 37,907.88 : x
  2. Step 2: Convert to fraction form
    68,121.42/94,005 = 37,907.88/x
  3. Step 3: Cross multiply
    68,121.42x = 94,005 × 37,907.88
  4. Step 4: Simplify right side
    68,121.42x = 3,563,530,259.40
  5. Step 5: Solve for x
    x = 3,563,530,259.40/68,121.42
  6. Step 6: Final answer
    x = 52,311.45

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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.