Home / 92,921.21-128,231.78-50,479.83

Finding the Fourth Proportional to 92,921.21, 128,231.78 and 50,479.83

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Solution

The fourth proportional to 92,921.21, 128,231.78 and 50,479.83 is: 69,662.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,921.21 : 128,231.78 = 50,479.83 : x
  2. Step 2: Convert to fraction form
    92,921.21/128,231.78 = 50,479.83/x
  3. Step 3: Cross multiply
    92,921.21x = 128,231.78 × 50,479.83
  4. Step 4: Simplify right side
    92,921.21x = 6,473,118,202.60
  5. Step 5: Solve for x
    x = 6,473,118,202.60/92,921.21
  6. Step 6: Final answer
    x = 69,662.44

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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.