Home / 76,986.64-115,518.24-43,231.68

Finding the Fourth Proportional to 76,986.64, 115,518.24 and 43,231.68

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Solution

The fourth proportional to 76,986.64, 115,518.24 and 43,231.68 is: 64,869.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,986.64 : 115,518.24 = 43,231.68 : x
  2. Step 2: Convert to fraction form
    76,986.64/115,518.24 = 43,231.68/x
  3. Step 3: Cross multiply
    76,986.64x = 115,518.24 × 43,231.68
  4. Step 4: Simplify right side
    76,986.64x = 4,994,047,585.84
  5. Step 5: Solve for x
    x = 4,994,047,585.84/76,986.64
  6. Step 6: Final answer
    x = 64,869.02

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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.