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Finding the Fourth Proportional to 69,130.56, 95,409.45 and 38,921.88

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Solution

The fourth proportional to 69,130.56, 95,409.45 and 38,921.88 is: 53,717.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,130.56 : 95,409.45 = 38,921.88 : x
  2. Step 2: Convert to fraction form
    69,130.56/95,409.45 = 38,921.88/x
  3. Step 3: Cross multiply
    69,130.56x = 95,409.45 × 38,921.88
  4. Step 4: Simplify right side
    69,130.56x = 3,713,515,163.77
  5. Step 5: Solve for x
    x = 3,713,515,163.77/69,130.56
  6. Step 6: Final answer
    x = 53,717.42

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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.