Home / 80,986.83-121,465.05-65,283.56

Finding the Fourth Proportional to 80,986.83, 121,465.05 and 65,283.56

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Solution

The fourth proportional to 80,986.83, 121,465.05 and 65,283.56 is: 97,913.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,986.83 : 121,465.05 = 65,283.56 : x
  2. Step 2: Convert to fraction form
    80,986.83/121,465.05 = 65,283.56/x
  3. Step 3: Cross multiply
    80,986.83x = 121,465.05 × 65,283.56
  4. Step 4: Simplify right side
    80,986.83x = 7,929,670,879.58
  5. Step 5: Solve for x
    x = 7,929,670,879.58/80,986.83
  6. Step 6: Final answer
    x = 97,913.09

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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.