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Finding the Fourth Proportional to 53,271.90, 79,871.40 and 25,205.40

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Solution

The fourth proportional to 53,271.90, 79,871.40 and 25,205.40 is: 37,790.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,271.90 : 79,871.40 = 25,205.40 : x
  2. Step 2: Convert to fraction form
    53,271.90/79,871.40 = 25,205.40/x
  3. Step 3: Cross multiply
    53,271.90x = 79,871.40 × 25,205.40
  4. Step 4: Simplify right side
    53,271.90x = 2,013,190,585.56
  5. Step 5: Solve for x
    x = 2,013,190,585.56/53,271.90
  6. Step 6: Final answer
    x = 37,790.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.