Home / 80,811.30-121,216.80-36,386.14

Finding the Fourth Proportional to 80,811.30, 121,216.80 and 36,386.14

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Solution

The fourth proportional to 80,811.30, 121,216.80 and 36,386.14 is: 54,579.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,811.30 : 121,216.80 = 36,386.14 : x
  2. Step 2: Convert to fraction form
    80,811.30/121,216.80 = 36,386.14/x
  3. Step 3: Cross multiply
    80,811.30x = 121,216.80 × 36,386.14
  4. Step 4: Simplify right side
    80,811.30x = 4,410,611,455.15
  5. Step 5: Solve for x
    x = 4,410,611,455.15/80,811.30
  6. Step 6: Final answer
    x = 54,579.14

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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.