Home / 81,936.86-122,905.28-46,851.92

Finding the Fourth Proportional to 81,936.86, 122,905.28 and 46,851.92

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Solution

The fourth proportional to 81,936.86, 122,905.28 and 46,851.92 is: 70,277.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,936.86 : 122,905.28 = 46,851.92 : x
  2. Step 2: Convert to fraction form
    81,936.86/122,905.28 = 46,851.92/x
  3. Step 3: Cross multiply
    81,936.86x = 122,905.28 × 46,851.92
  4. Step 4: Simplify right side
    81,936.86x = 5,758,347,848.74
  5. Step 5: Solve for x
    x = 5,758,347,848.74/81,936.86
  6. Step 6: Final answer
    x = 70,277.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.