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Finding the Fourth Proportional to 39,362.72, 54,555 and 38,625.44

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Solution

The fourth proportional to 39,362.72, 54,555 and 38,625.44 is: 53,533.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,362.72 : 54,555 = 38,625.44 : x
  2. Step 2: Convert to fraction form
    39,362.72/54,555 = 38,625.44/x
  3. Step 3: Cross multiply
    39,362.72x = 54,555 × 38,625.44
  4. Step 4: Simplify right side
    39,362.72x = 2,107,210,879.20
  5. Step 5: Solve for x
    x = 2,107,210,879.20/39,362.72
  6. Step 6: Final answer
    x = 53,533.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.