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Finding the Fourth Proportional to 39,285, 54,218.77 and 25,167.92

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Solution

The fourth proportional to 39,285, 54,218.77 and 25,167.92 is: 34,735.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,285 : 54,218.77 = 25,167.92 : x
  2. Step 2: Convert to fraction form
    39,285/54,218.77 = 25,167.92/x
  3. Step 3: Cross multiply
    39,285x = 54,218.77 × 25,167.92
  4. Step 4: Simplify right side
    39,285x = 1,364,573,331.84
  5. Step 5: Solve for x
    x = 1,364,573,331.84/39,285
  6. Step 6: Final answer
    x = 34,735.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.