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Finding the Fourth Proportional to 45,458.60, 68,198.21 and 13,871.48

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Solution

The fourth proportional to 45,458.60, 68,198.21 and 13,871.48 is: 20,810.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,458.60 : 68,198.21 = 13,871.48 : x
  2. Step 2: Convert to fraction form
    45,458.60/68,198.21 = 13,871.48/x
  3. Step 3: Cross multiply
    45,458.60x = 68,198.21 × 13,871.48
  4. Step 4: Simplify right side
    45,458.60x = 946,009,799.74
  5. Step 5: Solve for x
    x = 946,009,799.74/45,458.60
  6. Step 6: Final answer
    x = 20,810.36

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1.5x scale

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.