Home / 81,786.88-112,873.28-45,985.60

Finding the Fourth Proportional to 81,786.88, 112,873.28 and 45,985.60

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Solution

The fourth proportional to 81,786.88, 112,873.28 and 45,985.60 is: 63,464.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,786.88 : 112,873.28 = 45,985.60 : x
  2. Step 2: Convert to fraction form
    81,786.88/112,873.28 = 45,985.60/x
  3. Step 3: Cross multiply
    81,786.88x = 112,873.28 × 45,985.60
  4. Step 4: Simplify right side
    81,786.88x = 5,190,545,504.77
  5. Step 5: Solve for x
    x = 5,190,545,504.77/81,786.88
  6. Step 6: Final answer
    x = 63,464.28

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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.