Home / 72,661.34-109,012.85-30,519.75

Finding the Fourth Proportional to 72,661.34, 109,012.85 and 30,519.75

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Solution

The fourth proportional to 72,661.34, 109,012.85 and 30,519.75 is: 45,788.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,661.34 : 109,012.85 = 30,519.75 : x
  2. Step 2: Convert to fraction form
    72,661.34/109,012.85 = 30,519.75/x
  3. Step 3: Cross multiply
    72,661.34x = 109,012.85 × 30,519.75
  4. Step 4: Simplify right side
    72,661.34x = 3,327,044,732.55
  5. Step 5: Solve for x
    x = 3,327,044,732.55/72,661.34
  6. Step 6: Final answer
    x = 45,788.38

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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.