Home / 69,142.36-95,418.12-38,928.68

Finding the Fourth Proportional to 69,142.36, 95,418.12 and 38,928.68

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Solution

The fourth proportional to 69,142.36, 95,418.12 and 38,928.68 is: 53,722.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,142.36 : 95,418.12 = 38,928.68 : x
  2. Step 2: Convert to fraction form
    69,142.36/95,418.12 = 38,928.68/x
  3. Step 3: Cross multiply
    69,142.36x = 95,418.12 × 38,928.68
  4. Step 4: Simplify right side
    69,142.36x = 3,714,501,459.68
  5. Step 5: Solve for x
    x = 3,714,501,459.68/69,142.36
  6. Step 6: Final answer
    x = 53,722.51

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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.