Home / 81,968.60-113,118.28-49,695.32

Finding the Fourth Proportional to 81,968.60, 113,118.28 and 49,695.32

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Solution

The fourth proportional to 81,968.60, 113,118.28 and 49,695.32 is: 68,580.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,968.60 : 113,118.28 = 49,695.32 : x
  2. Step 2: Convert to fraction form
    81,968.60/113,118.28 = 49,695.32/x
  3. Step 3: Cross multiply
    81,968.60x = 113,118.28 × 49,695.32
  4. Step 4: Simplify right side
    81,968.60x = 5,621,449,122.45
  5. Step 5: Solve for x
    x = 5,621,449,122.45/81,968.60
  6. Step 6: Final answer
    x = 68,580.52

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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.