Home / 77,120.26-106,425.36-43,128.80

Finding the Fourth Proportional to 77,120.26, 106,425.36 and 43,128.80

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Solution

The fourth proportional to 77,120.26, 106,425.36 and 43,128.80 is: 59,517.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,120.26 : 106,425.36 = 43,128.80 : x
  2. Step 2: Convert to fraction form
    77,120.26/106,425.36 = 43,128.80/x
  3. Step 3: Cross multiply
    77,120.26x = 106,425.36 × 43,128.80
  4. Step 4: Simplify right side
    77,120.26x = 4,589,998,066.37
  5. Step 5: Solve for x
    x = 4,589,998,066.37/77,120.26
  6. Step 6: Final answer
    x = 59,517.41

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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.