Home / 85,930.56-128,844.06-38,537.07

Finding the Fourth Proportional to 85,930.56, 128,844.06 and 38,537.07

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Solution

The fourth proportional to 85,930.56, 128,844.06 and 38,537.07 is: 57,782.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,930.56 : 128,844.06 = 38,537.07 : x
  2. Step 2: Convert to fraction form
    85,930.56/128,844.06 = 38,537.07/x
  3. Step 3: Cross multiply
    85,930.56x = 128,844.06 × 38,537.07
  4. Step 4: Simplify right side
    85,930.56x = 4,965,272,559.30
  5. Step 5: Solve for x
    x = 4,965,272,559.30/85,930.56
  6. Step 6: Final answer
    x = 57,782.38

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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.