Home / 31,480.10-47,110.80-28,855.70

Finding the Fourth Proportional to 31,480.10, 47,110.80 and 28,855.70

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Solution

The fourth proportional to 31,480.10, 47,110.80 and 28,855.70 is: 43,183.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,480.10 : 47,110.80 = 28,855.70 : x
  2. Step 2: Convert to fraction form
    31,480.10/47,110.80 = 28,855.70/x
  3. Step 3: Cross multiply
    31,480.10x = 47,110.80 × 28,855.70
  4. Step 4: Simplify right side
    31,480.10x = 1,359,415,111.56
  5. Step 5: Solve for x
    x = 1,359,415,111.56/31,480.10
  6. Step 6: Final answer
    x = 43,183.32

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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.