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Finding the Fourth Proportional to 39,656.34, 54,729.26 and 21,754.84

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Solution

The fourth proportional to 39,656.34, 54,729.26 and 21,754.84 is: 30,023.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,656.34 : 54,729.26 = 21,754.84 : x
  2. Step 2: Convert to fraction form
    39,656.34/54,729.26 = 21,754.84/x
  3. Step 3: Cross multiply
    39,656.34x = 54,729.26 × 21,754.84
  4. Step 4: Simplify right side
    39,656.34x = 1,190,626,140.48
  5. Step 5: Solve for x
    x = 1,190,626,140.48/39,656.34
  6. Step 6: Final answer
    x = 30,023.60

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.