Home / 74,129.40-111,203.70-36,708.60

Finding the Fourth Proportional to 74,129.40, 111,203.70 and 36,708.60

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Solution

The fourth proportional to 74,129.40, 111,203.70 and 36,708.60 is: 55,067.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,129.40 : 111,203.70 = 36,708.60 : x
  2. Step 2: Convert to fraction form
    74,129.40/111,203.70 = 36,708.60/x
  3. Step 3: Cross multiply
    74,129.40x = 111,203.70 × 36,708.60
  4. Step 4: Simplify right side
    74,129.40x = 4,082,132,141.82
  5. Step 5: Solve for x
    x = 4,082,132,141.82/74,129.40
  6. Step 6: Final answer
    x = 55,067.65

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1.5x scale

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.