Home / 85,365.40-128,145.30-50,324.80

Finding the Fourth Proportional to 85,365.40, 128,145.30 and 50,324.80

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Solution

The fourth proportional to 85,365.40, 128,145.30 and 50,324.80 is: 75,544.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,365.40 : 128,145.30 = 50,324.80 : x
  2. Step 2: Convert to fraction form
    85,365.40/128,145.30 = 50,324.80/x
  3. Step 3: Cross multiply
    85,365.40x = 128,145.30 × 50,324.80
  4. Step 4: Simplify right side
    85,365.40x = 6,448,886,593.44
  5. Step 5: Solve for x
    x = 6,448,886,593.44/85,365.40
  6. Step 6: Final answer
    x = 75,544.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.