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Finding the Fourth Proportional to 47,130, 65,040.92 and 25,910.80

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Solution

The fourth proportional to 47,130, 65,040.92 and 25,910.80 is: 35,757.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,130 : 65,040.92 = 25,910.80 : x
  2. Step 2: Convert to fraction form
    47,130/65,040.92 = 25,910.80/x
  3. Step 3: Cross multiply
    47,130x = 65,040.92 × 25,910.80
  4. Step 4: Simplify right side
    47,130x = 1,685,262,269.94
  5. Step 5: Solve for x
    x = 1,685,262,269.94/47,130
  6. Step 6: Final answer
    x = 35,757.74

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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.