Home / 55,879.56-77,112.27-30,729.06

Finding the Fourth Proportional to 55,879.56, 77,112.27 and 30,729.06

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Solution

The fourth proportional to 55,879.56, 77,112.27 and 30,729.06 is: 42,405.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,879.56 : 77,112.27 = 30,729.06 : x
  2. Step 2: Convert to fraction form
    55,879.56/77,112.27 = 30,729.06/x
  3. Step 3: Cross multiply
    55,879.56x = 77,112.27 × 30,729.06
  4. Step 4: Simplify right side
    55,879.56x = 2,369,587,571.57
  5. Step 5: Solve for x
    x = 2,369,587,571.57/55,879.56
  6. Step 6: Final answer
    x = 42,405.27

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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.