Home / 40,741.01-61,112.79-12,661.21

Finding the Fourth Proportional to 40,741.01, 61,112.79 and 12,661.21

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Solution

The fourth proportional to 40,741.01, 61,112.79 and 12,661.21 is: 18,992.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,741.01 : 61,112.79 = 12,661.21 : x
  2. Step 2: Convert to fraction form
    40,741.01/61,112.79 = 12,661.21/x
  3. Step 3: Cross multiply
    40,741.01x = 61,112.79 × 12,661.21
  4. Step 4: Simplify right side
    40,741.01x = 773,761,499.01
  5. Step 5: Solve for x
    x = 773,761,499.01/40,741.01
  6. Step 6: Final answer
    x = 18,992.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.