Home / 76,084.18-114,166.07-31,138.90

Finding the Fourth Proportional to 76,084.18, 114,166.07 and 31,138.90

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Solution

The fourth proportional to 76,084.18, 114,166.07 and 31,138.90 is: 46,724.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,084.18 : 114,166.07 = 31,138.90 : x
  2. Step 2: Convert to fraction form
    76,084.18/114,166.07 = 31,138.90/x
  3. Step 3: Cross multiply
    76,084.18x = 114,166.07 × 31,138.90
  4. Step 4: Simplify right side
    76,084.18x = 3,555,005,837.12
  5. Step 5: Solve for x
    x = 3,555,005,837.12/76,084.18
  6. Step 6: Final answer
    x = 46,724.64

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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.