Home / 74,259.78-111,388.65-18,100.32

Finding the Fourth Proportional to 74,259.78, 111,388.65 and 18,100.32

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Solution

The fourth proportional to 74,259.78, 111,388.65 and 18,100.32 is: 27,150.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,259.78 : 111,388.65 = 18,100.32 : x
  2. Step 2: Convert to fraction form
    74,259.78/111,388.65 = 18,100.32/x
  3. Step 3: Cross multiply
    74,259.78x = 111,388.65 × 18,100.32
  4. Step 4: Simplify right side
    74,259.78x = 2,016,170,209.37
  5. Step 5: Solve for x
    x = 2,016,170,209.37/74,259.78
  6. Step 6: Final answer
    x = 27,150.23

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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.