Home / 69,405.66-95,775.21-38,778.35

Finding the Fourth Proportional to 69,405.66, 95,775.21 and 38,778.35

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Solution

The fourth proportional to 69,405.66, 95,775.21 and 38,778.35 is: 53,511.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,405.66 : 95,775.21 = 38,778.35 : x
  2. Step 2: Convert to fraction form
    69,405.66/95,775.21 = 38,778.35/x
  3. Step 3: Cross multiply
    69,405.66x = 95,775.21 × 38,778.35
  4. Step 4: Simplify right side
    69,405.66x = 3,714,004,135.83
  5. Step 5: Solve for x
    x = 3,714,004,135.83/69,405.66
  6. Step 6: Final answer
    x = 53,511.55

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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.