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Finding the Fourth Proportional to 69,129.45, 95,401.53 and 38,914.83

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Solution

The fourth proportional to 69,129.45, 95,401.53 and 38,914.83 is: 53,704.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,129.45 : 95,401.53 = 38,914.83 : x
  2. Step 2: Convert to fraction form
    69,129.45/95,401.53 = 38,914.83/x
  3. Step 3: Cross multiply
    69,129.45x = 95,401.53 × 38,914.83
  4. Step 4: Simplify right side
    69,129.45x = 3,712,534,321.69
  5. Step 5: Solve for x
    x = 3,712,534,321.69/69,129.45
  6. Step 6: Final answer
    x = 53,704.09

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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.