Home / 57,271.70-85,886.97-19,821.61

Finding the Fourth Proportional to 57,271.70, 85,886.97 and 19,821.61

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Solution

The fourth proportional to 57,271.70, 85,886.97 and 19,821.61 is: 29,725.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,271.70 : 85,886.97 = 19,821.61 : x
  2. Step 2: Convert to fraction form
    57,271.70/85,886.97 = 19,821.61/x
  3. Step 3: Cross multiply
    57,271.70x = 85,886.97 × 19,821.61
  4. Step 4: Simplify right side
    57,271.70x = 1,702,418,023.42
  5. Step 5: Solve for x
    x = 1,702,418,023.42/57,271.70
  6. Step 6: Final answer
    x = 29,725.29

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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.