Home / 66,971.08-100,457.34-20,224.36

Finding the Fourth Proportional to 66,971.08, 100,457.34 and 20,224.36

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Solution

The fourth proportional to 66,971.08, 100,457.34 and 20,224.36 is: 30,336.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,971.08 : 100,457.34 = 20,224.36 : x
  2. Step 2: Convert to fraction form
    66,971.08/100,457.34 = 20,224.36/x
  3. Step 3: Cross multiply
    66,971.08x = 100,457.34 × 20,224.36
  4. Step 4: Simplify right side
    66,971.08x = 2,031,685,408.80
  5. Step 5: Solve for x
    x = 2,031,685,408.80/66,971.08
  6. Step 6: Final answer
    x = 30,336.76

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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.