Home / 74,704.40-111,983.70-66,831.20

Finding the Fourth Proportional to 74,704.40, 111,983.70 and 66,831.20

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Solution

The fourth proportional to 74,704.40, 111,983.70 and 66,831.20 is: 100,181.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,704.40 : 111,983.70 = 66,831.20 : x
  2. Step 2: Convert to fraction form
    74,704.40/111,983.70 = 66,831.20/x
  3. Step 3: Cross multiply
    74,704.40x = 111,983.70 × 66,831.20
  4. Step 4: Simplify right side
    74,704.40x = 7,484,005,051.44
  5. Step 5: Solve for x
    x = 7,484,005,051.44/74,704.40
  6. Step 6: Final answer
    x = 100,181.58

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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.