Home / 84,571.41-126,876.34-28,407.21

Finding the Fourth Proportional to 84,571.41, 126,876.34 and 28,407.21

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Solution

The fourth proportional to 84,571.41, 126,876.34 and 28,407.21 is: 42,617.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,571.41 : 126,876.34 = 28,407.21 : x
  2. Step 2: Convert to fraction form
    84,571.41/126,876.34 = 28,407.21/x
  3. Step 3: Cross multiply
    84,571.41x = 126,876.34 × 28,407.21
  4. Step 4: Simplify right side
    84,571.41x = 3,604,203,107.81
  5. Step 5: Solve for x
    x = 3,604,203,107.81/84,571.41
  6. Step 6: Final answer
    x = 42,617.27

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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.