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Finding the Fourth Proportional to 69,140.36, 95,415.36 and 38,926.68

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Solution

The fourth proportional to 69,140.36, 95,415.36 and 38,926.68 is: 53,719.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,140.36 : 95,415.36 = 38,926.68 : x
  2. Step 2: Convert to fraction form
    69,140.36/95,415.36 = 38,926.68/x
  3. Step 3: Cross multiply
    69,140.36x = 95,415.36 × 38,926.68
  4. Step 4: Simplify right side
    69,140.36x = 3,714,203,185.80
  5. Step 5: Solve for x
    x = 3,714,203,185.80/69,140.36
  6. Step 6: Final answer
    x = 53,719.75

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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.