Home / 47,745.10-71,570.40-21,105.55

Finding the Fourth Proportional to 47,745.10, 71,570.40 and 21,105.55

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Solution

The fourth proportional to 47,745.10, 71,570.40 and 21,105.55 is: 31,637.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,745.10 : 71,570.40 = 21,105.55 : x
  2. Step 2: Convert to fraction form
    47,745.10/71,570.40 = 21,105.55/x
  3. Step 3: Cross multiply
    47,745.10x = 71,570.40 × 21,105.55
  4. Step 4: Simplify right side
    47,745.10x = 1,510,532,655.72
  5. Step 5: Solve for x
    x = 1,510,532,655.72/47,745.10
  6. Step 6: Final answer
    x = 31,637.44

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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.