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Finding the Fourth Proportional to 40,447, 60,682.47 and 20,739.39

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Solution

The fourth proportional to 40,447, 60,682.47 and 20,739.39 is: 31,115.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,447 : 60,682.47 = 20,739.39 : x
  2. Step 2: Convert to fraction form
    40,447/60,682.47 = 20,739.39/x
  3. Step 3: Cross multiply
    40,447x = 60,682.47 × 20,739.39
  4. Step 4: Simplify right side
    40,447x = 1,258,517,108.08
  5. Step 5: Solve for x
    x = 1,258,517,108.08/40,447
  6. Step 6: Final answer
    x = 31,115.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.