Home / 77,977.70-116,965.46-18,812.88

Finding the Fourth Proportional to 77,977.70, 116,965.46 and 18,812.88

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Solution

The fourth proportional to 77,977.70, 116,965.46 and 18,812.88 is: 28,219.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,977.70 : 116,965.46 = 18,812.88 : x
  2. Step 2: Convert to fraction form
    77,977.70/116,965.46 = 18,812.88/x
  3. Step 3: Cross multiply
    77,977.70x = 116,965.46 × 18,812.88
  4. Step 4: Simplify right side
    77,977.70x = 2,200,457,163.12
  5. Step 5: Solve for x
    x = 2,200,457,163.12/77,977.70
  6. Step 6: Final answer
    x = 28,219.06

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1.5x scale

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.