Home / 80,386.74-120,568.32-21,226.59

Finding the Fourth Proportional to 80,386.74, 120,568.32 and 21,226.59

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Solution

The fourth proportional to 80,386.74, 120,568.32 and 21,226.59 is: 31,836.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,386.74 : 120,568.32 = 21,226.59 : x
  2. Step 2: Convert to fraction form
    80,386.74/120,568.32 = 21,226.59/x
  3. Step 3: Cross multiply
    80,386.74x = 120,568.32 × 21,226.59
  4. Step 4: Simplify right side
    80,386.74x = 2,559,254,295.63
  5. Step 5: Solve for x
    x = 2,559,254,295.63/80,386.74
  6. Step 6: Final answer
    x = 31,836.77

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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.