Home / 63,142.20-87,142.37-47,198.97

Finding the Fourth Proportional to 63,142.20, 87,142.37 and 47,198.97

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Solution

The fourth proportional to 63,142.20, 87,142.37 and 47,198.97 is: 65,139.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,142.20 : 87,142.37 = 47,198.97 : x
  2. Step 2: Convert to fraction form
    63,142.20/87,142.37 = 47,198.97/x
  3. Step 3: Cross multiply
    63,142.20x = 87,142.37 × 47,198.97
  4. Step 4: Simplify right side
    63,142.20x = 4,113,029,871.36
  5. Step 5: Solve for x
    x = 4,113,029,871.36/63,142.20
  6. Step 6: Final answer
    x = 65,139.16

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1.5x scale

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.