Home / 74,145.36-111,218.09-42,760.59

Finding the Fourth Proportional to 74,145.36, 111,218.09 and 42,760.59

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Solution

The fourth proportional to 74,145.36, 111,218.09 and 42,760.59 is: 64,140.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,145.36 : 111,218.09 = 42,760.59 : x
  2. Step 2: Convert to fraction form
    74,145.36/111,218.09 = 42,760.59/x
  3. Step 3: Cross multiply
    74,145.36x = 111,218.09 × 42,760.59
  4. Step 4: Simplify right side
    74,145.36x = 4,755,751,147.07
  5. Step 5: Solve for x
    x = 4,755,751,147.07/74,145.36
  6. Step 6: Final answer
    x = 64,140.91

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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.