Home / 80,772.54-121,158.75-21,606.67

Finding the Fourth Proportional to 80,772.54, 121,158.75 and 21,606.67

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Solution

The fourth proportional to 80,772.54, 121,158.75 and 21,606.67 is: 32,409.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,772.54 : 121,158.75 = 21,606.67 : x
  2. Step 2: Convert to fraction form
    80,772.54/121,158.75 = 21,606.67/x
  3. Step 3: Cross multiply
    80,772.54x = 121,158.75 × 21,606.67
  4. Step 4: Simplify right side
    80,772.54x = 2,617,837,128.86
  5. Step 5: Solve for x
    x = 2,617,837,128.86/80,772.54
  6. Step 6: Final answer
    x = 32,409.99

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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.