Home / 85,934.21-128,939.38-33,347.66

Finding the Fourth Proportional to 85,934.21, 128,939.38 and 33,347.66

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Solution

The fourth proportional to 85,934.21, 128,939.38 and 33,347.66 is: 50,036.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,934.21 : 128,939.38 = 33,347.66 : x
  2. Step 2: Convert to fraction form
    85,934.21/128,939.38 = 33,347.66/x
  3. Step 3: Cross multiply
    85,934.21x = 128,939.38 × 33,347.66
  4. Step 4: Simplify right side
    85,934.21x = 4,299,825,876.78
  5. Step 5: Solve for x
    x = 4,299,825,876.78/85,934.21
  6. Step 6: Final answer
    x = 50,036.26

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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.