Home / 81,321.63-112,226.37-45,511.56

Finding the Fourth Proportional to 81,321.63, 112,226.37 and 45,511.56

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Solution

The fourth proportional to 81,321.63, 112,226.37 and 45,511.56 is: 62,807.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,321.63 : 112,226.37 = 45,511.56 : x
  2. Step 2: Convert to fraction form
    81,321.63/112,226.37 = 45,511.56/x
  3. Step 3: Cross multiply
    81,321.63x = 112,226.37 × 45,511.56
  4. Step 4: Simplify right side
    81,321.63x = 5,107,597,171.84
  5. Step 5: Solve for x
    x = 5,107,597,171.84/81,321.63
  6. Step 6: Final answer
    x = 62,807.36

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1.5x scale

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.