Home / 81,443.21-112,390.54-45,633.92

Finding the Fourth Proportional to 81,443.21, 112,390.54 and 45,633.92

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Solution

The fourth proportional to 81,443.21, 112,390.54 and 45,633.92 is: 62,974.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,443.21 : 112,390.54 = 45,633.92 : x
  2. Step 2: Convert to fraction form
    81,443.21/112,390.54 = 45,633.92/x
  3. Step 3: Cross multiply
    81,443.21x = 112,390.54 × 45,633.92
  4. Step 4: Simplify right side
    81,443.21x = 5,128,820,235.08
  5. Step 5: Solve for x
    x = 5,128,820,235.08/81,443.21
  6. Step 6: Final answer
    x = 62,974.19

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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.