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Finding the Fourth Proportional to 39,620, 54,675.60 and 23,705.12

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Solution

The fourth proportional to 39,620, 54,675.60 and 23,705.12 is: 32,713.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,620 : 54,675.60 = 23,705.12 : x
  2. Step 2: Convert to fraction form
    39,620/54,675.60 = 23,705.12/x
  3. Step 3: Cross multiply
    39,620x = 54,675.60 × 23,705.12
  4. Step 4: Simplify right side
    39,620x = 1,296,091,659.07
  5. Step 5: Solve for x
    x = 1,296,091,659.07/39,620
  6. Step 6: Final answer
    x = 32,713.07

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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.