Home / 76,087.20-113,580.96-66,756

Finding the Fourth Proportional to 76,087.20, 113,580.96 and 66,756

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Solution

The fourth proportional to 76,087.20, 113,580.96 and 66,756 is: 99,651.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,087.20 : 113,580.96 = 66,756 : x
  2. Step 2: Convert to fraction form
    76,087.20/113,580.96 = 66,756/x
  3. Step 3: Cross multiply
    76,087.20x = 113,580.96 × 66,756
  4. Step 4: Simplify right side
    76,087.20x = 7,582,210,565.76
  5. Step 5: Solve for x
    x = 7,582,210,565.76/76,087.20
  6. Step 6: Final answer
    x = 99,651.59

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.