Home / 86,811.51-130,222.36-33,503.78

Finding the Fourth Proportional to 86,811.51, 130,222.36 and 33,503.78

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Solution

The fourth proportional to 86,811.51, 130,222.36 and 33,503.78 is: 50,257.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,811.51 : 130,222.36 = 33,503.78 : x
  2. Step 2: Convert to fraction form
    86,811.51/130,222.36 = 33,503.78/x
  3. Step 3: Cross multiply
    86,811.51x = 130,222.36 × 33,503.78
  4. Step 4: Simplify right side
    86,811.51x = 4,362,941,667.96
  5. Step 5: Solve for x
    x = 4,362,941,667.96/86,811.51
  6. Step 6: Final answer
    x = 50,257.64

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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.