Home / 73,020.21-109,530.54-20,430.15

Finding the Fourth Proportional to 73,020.21, 109,530.54 and 20,430.15

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Solution

The fourth proportional to 73,020.21, 109,530.54 and 20,430.15 is: 30,645.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,020.21 : 109,530.54 = 20,430.15 : x
  2. Step 2: Convert to fraction form
    73,020.21/109,530.54 = 20,430.15/x
  3. Step 3: Cross multiply
    73,020.21x = 109,530.54 × 20,430.15
  4. Step 4: Simplify right side
    73,020.21x = 2,237,725,361.78
  5. Step 5: Solve for x
    x = 2,237,725,361.78/73,020.21
  6. Step 6: Final answer
    x = 30,645.29

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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.