Home / 51,405.88-70,946.40-30,187.12

Finding the Fourth Proportional to 51,405.88, 70,946.40 and 30,187.12

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Solution

The fourth proportional to 51,405.88, 70,946.40 and 30,187.12 is: 41,661.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,405.88 : 70,946.40 = 30,187.12 : x
  2. Step 2: Convert to fraction form
    51,405.88/70,946.40 = 30,187.12/x
  3. Step 3: Cross multiply
    51,405.88x = 70,946.40 × 30,187.12
  4. Step 4: Simplify right side
    51,405.88x = 2,141,667,490.37
  5. Step 5: Solve for x
    x = 2,141,667,490.37/51,405.88
  6. Step 6: Final answer
    x = 41,661.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.