Home / 74,523.20-111,698.40-30,120.80

Finding the Fourth Proportional to 74,523.20, 111,698.40 and 30,120.80

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Solution

The fourth proportional to 74,523.20, 111,698.40 and 30,120.80 is: 45,146.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,523.20 : 111,698.40 = 30,120.80 : x
  2. Step 2: Convert to fraction form
    74,523.20/111,698.40 = 30,120.80/x
  3. Step 3: Cross multiply
    74,523.20x = 111,698.40 × 30,120.80
  4. Step 4: Simplify right side
    74,523.20x = 3,364,445,166.72
  5. Step 5: Solve for x
    x = 3,364,445,166.72/74,523.20
  6. Step 6: Final answer
    x = 45,146.28

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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.