Home / 76,286.12-114,445.68-31,307.60

Finding the Fourth Proportional to 76,286.12, 114,445.68 and 31,307.60

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Solution

The fourth proportional to 76,286.12, 114,445.68 and 31,307.60 is: 46,968.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,286.12 : 114,445.68 = 31,307.60 : x
  2. Step 2: Convert to fraction form
    76,286.12/114,445.68 = 31,307.60/x
  3. Step 3: Cross multiply
    76,286.12x = 114,445.68 × 31,307.60
  4. Step 4: Simplify right side
    76,286.12x = 3,583,019,571.17
  5. Step 5: Solve for x
    x = 3,583,019,571.17/76,286.12
  6. Step 6: Final answer
    x = 46,968.17

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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.