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Finding the Fourth Proportional to 39,031, 53,886 and 25,625.74

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Solution

The fourth proportional to 39,031, 53,886 and 25,625.74 is: 35,378.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,031 : 53,886 = 25,625.74 : x
  2. Step 2: Convert to fraction form
    39,031/53,886 = 25,625.74/x
  3. Step 3: Cross multiply
    39,031x = 53,886 × 25,625.74
  4. Step 4: Simplify right side
    39,031x = 1,380,868,625.64
  5. Step 5: Solve for x
    x = 1,380,868,625.64/39,031
  6. Step 6: Final answer
    x = 35,378.77

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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.