Home / 84,025.62-126,050.72-30,720.20

Finding the Fourth Proportional to 84,025.62, 126,050.72 and 30,720.20

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Solution

The fourth proportional to 84,025.62, 126,050.72 and 30,720.20 is: 46,084.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,025.62 : 126,050.72 = 30,720.20 : x
  2. Step 2: Convert to fraction form
    84,025.62/126,050.72 = 30,720.20/x
  3. Step 3: Cross multiply
    84,025.62x = 126,050.72 × 30,720.20
  4. Step 4: Simplify right side
    84,025.62x = 3,872,302,544.69
  5. Step 5: Solve for x
    x = 3,872,302,544.69/84,025.62
  6. Step 6: Final answer
    x = 46,084.78

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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.