Home / 80,771.54-121,157.25-21,605.67

Finding the Fourth Proportional to 80,771.54, 121,157.25 and 21,605.67

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Solution

The fourth proportional to 80,771.54, 121,157.25 and 21,605.67 is: 32,408.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,771.54 : 121,157.25 = 21,605.67 : x
  2. Step 2: Convert to fraction form
    80,771.54/121,157.25 = 21,605.67/x
  3. Step 3: Cross multiply
    80,771.54x = 121,157.25 × 21,605.67
  4. Step 4: Simplify right side
    80,771.54x = 2,617,683,561.61
  5. Step 5: Solve for x
    x = 2,617,683,561.61/80,771.54
  6. Step 6: Final answer
    x = 32,408.49

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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.