Home / 51,790.37-77,726.55-20,215.55

Finding the Fourth Proportional to 51,790.37, 77,726.55 and 20,215.55

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Solution

The fourth proportional to 51,790.37, 77,726.55 and 20,215.55 is: 30,339.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,790.37 : 77,726.55 = 20,215.55 : x
  2. Step 2: Convert to fraction form
    51,790.37/77,726.55 = 20,215.55/x
  3. Step 3: Cross multiply
    51,790.37x = 77,726.55 × 20,215.55
  4. Step 4: Simplify right side
    51,790.37x = 1,571,284,957.85
  5. Step 5: Solve for x
    x = 1,571,284,957.85/51,790.37
  6. Step 6: Final answer
    x = 30,339.33

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1.5x scale

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.