Home / 85,415.60-117,831.61-55,226.81

Finding the Fourth Proportional to 85,415.60, 117,831.61 and 55,226.81

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Solution

The fourth proportional to 85,415.60, 117,831.61 and 55,226.81 is: 76,185.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,415.60 : 117,831.61 = 55,226.81 : x
  2. Step 2: Convert to fraction form
    85,415.60/117,831.61 = 55,226.81/x
  3. Step 3: Cross multiply
    85,415.60x = 117,831.61 × 55,226.81
  4. Step 4: Simplify right side
    85,415.60x = 6,507,464,301.08
  5. Step 5: Solve for x
    x = 6,507,464,301.08/85,415.60
  6. Step 6: Final answer
    x = 76,185.90

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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.