Home / 72,035.45-99,408.03-39,770.33

Finding the Fourth Proportional to 72,035.45, 99,408.03 and 39,770.33

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Solution

The fourth proportional to 72,035.45, 99,408.03 and 39,770.33 is: 54,882.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,035.45 : 99,408.03 = 39,770.33 : x
  2. Step 2: Convert to fraction form
    72,035.45/99,408.03 = 39,770.33/x
  3. Step 3: Cross multiply
    72,035.45x = 99,408.03 × 39,770.33
  4. Step 4: Simplify right side
    72,035.45x = 3,953,489,958.90
  5. Step 5: Solve for x
    x = 3,953,489,958.90/72,035.45
  6. Step 6: Final answer
    x = 54,882.56

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1.5x scale

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.