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Finding the Fourth Proportional to 39,419, 54,407.36 and 25,992.68

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Solution

The fourth proportional to 39,419, 54,407.36 and 25,992.68 is: 35,875.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,419 : 54,407.36 = 25,992.68 : x
  2. Step 2: Convert to fraction form
    39,419/54,407.36 = 25,992.68/x
  3. Step 3: Cross multiply
    39,419x = 54,407.36 × 25,992.68
  4. Step 4: Simplify right side
    39,419x = 1,414,193,098.12
  5. Step 5: Solve for x
    x = 1,414,193,098.12/39,419
  6. Step 6: Final answer
    x = 35,875.93

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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.