Home / 85,640.02-128,372.19-33,028.82

Finding the Fourth Proportional to 85,640.02, 128,372.19 and 33,028.82

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Solution

The fourth proportional to 85,640.02, 128,372.19 and 33,028.82 is: 49,509.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,640.02 : 128,372.19 = 33,028.82 : x
  2. Step 2: Convert to fraction form
    85,640.02/128,372.19 = 33,028.82/x
  3. Step 3: Cross multiply
    85,640.02x = 128,372.19 × 33,028.82
  4. Step 4: Simplify right side
    85,640.02x = 4,239,981,956.52
  5. Step 5: Solve for x
    x = 4,239,981,956.52/85,640.02
  6. Step 6: Final answer
    x = 49,509.35

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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.