Home / 77,109.16-106,378.44-51,914.92

Finding the Fourth Proportional to 77,109.16, 106,378.44 and 51,914.92

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Solution

The fourth proportional to 77,109.16, 106,378.44 and 51,914.92 is: 71,620.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,109.16 : 106,378.44 = 51,914.92 : x
  2. Step 2: Convert to fraction form
    77,109.16/106,378.44 = 51,914.92/x
  3. Step 3: Cross multiply
    77,109.16x = 106,378.44 × 51,914.92
  4. Step 4: Simplify right side
    77,109.16x = 5,522,628,202.32
  5. Step 5: Solve for x
    x = 5,522,628,202.32/77,109.16
  6. Step 6: Final answer
    x = 71,620.91

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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.