Home / 81,451.25-112,405.77-45,639.94

Finding the Fourth Proportional to 81,451.25, 112,405.77 and 45,639.94

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Solution

The fourth proportional to 81,451.25, 112,405.77 and 45,639.94 is: 62,984.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,451.25 : 112,405.77 = 45,639.94 : x
  2. Step 2: Convert to fraction form
    81,451.25/112,405.77 = 45,639.94/x
  3. Step 3: Cross multiply
    81,451.25x = 112,405.77 × 45,639.94
  4. Step 4: Simplify right side
    81,451.25x = 5,130,192,317.44
  5. Step 5: Solve for x
    x = 5,130,192,317.44/81,451.25
  6. Step 6: Final answer
    x = 62,984.82

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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.