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Finding the Fourth Proportional to 71,558.41, 107,325.46 and 18,973.21

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Solution

The fourth proportional to 71,558.41, 107,325.46 and 18,973.21 is: 28,456.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,558.41 : 107,325.46 = 18,973.21 : x
  2. Step 2: Convert to fraction form
    71,558.41/107,325.46 = 18,973.21/x
  3. Step 3: Cross multiply
    71,558.41x = 107,325.46 × 18,973.21
  4. Step 4: Simplify right side
    71,558.41x = 2,036,308,246.33
  5. Step 5: Solve for x
    x = 2,036,308,246.33/71,558.41
  6. Step 6: Final answer
    x = 28,456.59

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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.