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Finding the Fourth Proportional to 68,754.90, 94,888.49 and 38,540.28

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Solution

The fourth proportional to 68,754.90, 94,888.49 and 38,540.28 is: 53,189.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,754.90 : 94,888.49 = 38,540.28 : x
  2. Step 2: Convert to fraction form
    68,754.90/94,888.49 = 38,540.28/x
  3. Step 3: Cross multiply
    68,754.90x = 94,888.49 × 38,540.28
  4. Step 4: Simplify right side
    68,754.90x = 3,657,028,780.68
  5. Step 5: Solve for x
    x = 3,657,028,780.68/68,754.90
  6. Step 6: Final answer
    x = 53,189.35

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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.