Home / 81,443.18-112,391.49-45,633.44

Finding the Fourth Proportional to 81,443.18, 112,391.49 and 45,633.44

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Solution

The fourth proportional to 81,443.18, 112,391.49 and 45,633.44 is: 62,974.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,443.18 : 112,391.49 = 45,633.44 : x
  2. Step 2: Convert to fraction form
    81,443.18/112,391.49 = 45,633.44/x
  3. Step 3: Cross multiply
    81,443.18x = 112,391.49 × 45,633.44
  4. Step 4: Simplify right side
    81,443.18x = 5,128,809,753.47
  5. Step 5: Solve for x
    x = 5,128,809,753.47/81,443.18
  6. Step 6: Final answer
    x = 62,974.09

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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.