Home / 51,405.94-77,116.74-18,120.16

Finding the Fourth Proportional to 51,405.94, 77,116.74 and 18,120.16

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Solution

The fourth proportional to 51,405.94, 77,116.74 and 18,120.16 is: 27,183.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,405.94 : 77,116.74 = 18,120.16 : x
  2. Step 2: Convert to fraction form
    51,405.94/77,116.74 = 18,120.16/x
  3. Step 3: Cross multiply
    51,405.94x = 77,116.74 × 18,120.16
  4. Step 4: Simplify right side
    51,405.94x = 1,397,367,667.48
  5. Step 5: Solve for x
    x = 1,397,367,667.48/51,405.94
  6. Step 6: Final answer
    x = 27,183.00

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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.