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Finding the Fourth Proportional to 32,899.68, 45,390.40 and 18,742.56

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Solution

The fourth proportional to 32,899.68, 45,390.40 and 18,742.56 is: 25,858.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,899.68 : 45,390.40 = 18,742.56 : x
  2. Step 2: Convert to fraction form
    32,899.68/45,390.40 = 18,742.56/x
  3. Step 3: Cross multiply
    32,899.68x = 45,390.40 × 18,742.56
  4. Step 4: Simplify right side
    32,899.68x = 850,732,295.42
  5. Step 5: Solve for x
    x = 850,732,295.42/32,899.68
  6. Step 6: Final answer
    x = 25,858.38

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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.