Home / 85,989.06-128,983.59-50,504.58

Finding the Fourth Proportional to 85,989.06, 128,983.59 and 50,504.58

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Solution

The fourth proportional to 85,989.06, 128,983.59 and 50,504.58 is: 75,756.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,989.06 : 128,983.59 = 50,504.58 : x
  2. Step 2: Convert to fraction form
    85,989.06/128,983.59 = 50,504.58/x
  3. Step 3: Cross multiply
    85,989.06x = 128,983.59 × 50,504.58
  4. Step 4: Simplify right side
    85,989.06x = 6,514,262,039.84
  5. Step 5: Solve for x
    x = 6,514,262,039.84/85,989.06
  6. Step 6: Final answer
    x = 75,756.87

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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.