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Finding the Fourth Proportional to 68,189.34, 94,126.95 and 39,904.14

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Solution

The fourth proportional to 68,189.34, 94,126.95 and 39,904.14 is: 55,082.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,189.34 : 94,126.95 = 39,904.14 : x
  2. Step 2: Convert to fraction form
    68,189.34/94,126.95 = 39,904.14/x
  3. Step 3: Cross multiply
    68,189.34x = 94,126.95 × 39,904.14
  4. Step 4: Simplify right side
    68,189.34x = 3,756,054,990.57
  5. Step 5: Solve for x
    x = 3,756,054,990.57/68,189.34
  6. Step 6: Final answer
    x = 55,082.73

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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.