Home / 81,262.22-112,142.09-45,449.89

Finding the Fourth Proportional to 81,262.22, 112,142.09 and 45,449.89

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Solution

The fourth proportional to 81,262.22, 112,142.09 and 45,449.89 is: 62,720.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,262.22 : 112,142.09 = 45,449.89 : x
  2. Step 2: Convert to fraction form
    81,262.22/112,142.09 = 45,449.89/x
  3. Step 3: Cross multiply
    81,262.22x = 112,142.09 × 45,449.89
  4. Step 4: Simplify right side
    81,262.22x = 5,096,845,488.14
  5. Step 5: Solve for x
    x = 5,096,845,488.14/81,262.22
  6. Step 6: Final answer
    x = 62,720.98

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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.