Home / 79,622.05-119,433.08-20,457.72

Finding the Fourth Proportional to 79,622.05, 119,433.08 and 20,457.72

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Solution

The fourth proportional to 79,622.05, 119,433.08 and 20,457.72 is: 30,686.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,622.05 : 119,433.08 = 20,457.72 : x
  2. Step 2: Convert to fraction form
    79,622.05/119,433.08 = 20,457.72/x
  3. Step 3: Cross multiply
    79,622.05x = 119,433.08 × 20,457.72
  4. Step 4: Simplify right side
    79,622.05x = 2,443,327,912.21
  5. Step 5: Solve for x
    x = 2,443,327,912.21/79,622.05
  6. Step 6: Final answer
    x = 30,686.57

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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.