Home / 81,628.78-112,639.07-45,822.73

Finding the Fourth Proportional to 81,628.78, 112,639.07 and 45,822.73

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Solution

The fourth proportional to 81,628.78, 112,639.07 and 45,822.73 is: 63,230.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,628.78 : 112,639.07 = 45,822.73 : x
  2. Step 2: Convert to fraction form
    81,628.78/112,639.07 = 45,822.73/x
  3. Step 3: Cross multiply
    81,628.78x = 112,639.07 × 45,822.73
  4. Step 4: Simplify right side
    81,628.78x = 5,161,429,692.06
  5. Step 5: Solve for x
    x = 5,161,429,692.06/81,628.78
  6. Step 6: Final answer
    x = 63,230.51

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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.