Home / 80,671.22-121,004.09-30,749.50

Finding the Fourth Proportional to 80,671.22, 121,004.09 and 30,749.50

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Solution

The fourth proportional to 80,671.22, 121,004.09 and 30,749.50 is: 46,123.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,671.22 : 121,004.09 = 30,749.50 : x
  2. Step 2: Convert to fraction form
    80,671.22/121,004.09 = 30,749.50/x
  3. Step 3: Cross multiply
    80,671.22x = 121,004.09 × 30,749.50
  4. Step 4: Simplify right side
    80,671.22x = 3,720,815,265.46
  5. Step 5: Solve for x
    x = 3,720,815,265.46/80,671.22
  6. Step 6: Final answer
    x = 46,123.21

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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.