Home / 74,145.42-111,240.81-21,555.36

Finding the Fourth Proportional to 74,145.42, 111,240.81 and 21,555.36

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Solution

The fourth proportional to 74,145.42, 111,240.81 and 21,555.36 is: 32,339.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,145.42 : 111,240.81 = 21,555.36 : x
  2. Step 2: Convert to fraction form
    74,145.42/111,240.81 = 21,555.36/x
  3. Step 3: Cross multiply
    74,145.42x = 111,240.81 × 21,555.36
  4. Step 4: Simplify right side
    74,145.42x = 2,397,835,706.24
  5. Step 5: Solve for x
    x = 2,397,835,706.24/74,145.42
  6. Step 6: Final answer
    x = 32,339.63

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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.