Home / 76,691.40-105,831.54-43,150.92

Finding the Fourth Proportional to 76,691.40, 105,831.54 and 43,150.92

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Solution

The fourth proportional to 76,691.40, 105,831.54 and 43,150.92 is: 59,546.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,691.40 : 105,831.54 = 43,150.92 : x
  2. Step 2: Convert to fraction form
    76,691.40/105,831.54 = 43,150.92/x
  3. Step 3: Cross multiply
    76,691.40x = 105,831.54 × 43,150.92
  4. Step 4: Simplify right side
    76,691.40x = 4,566,728,316.02
  5. Step 5: Solve for x
    x = 4,566,728,316.02/76,691.40
  6. Step 6: Final answer
    x = 59,546.81

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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.