Home / 86,137.40-129,153.18-33,485.51

Finding the Fourth Proportional to 86,137.40, 129,153.18 and 33,485.51

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Solution

The fourth proportional to 86,137.40, 129,153.18 and 33,485.51 is: 50,207.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,137.40 : 129,153.18 = 33,485.51 : x
  2. Step 2: Convert to fraction form
    86,137.40/129,153.18 = 33,485.51/x
  3. Step 3: Cross multiply
    86,137.40x = 129,153.18 × 33,485.51
  4. Step 4: Simplify right side
    86,137.40x = 4,324,760,100.42
  5. Step 5: Solve for x
    x = 4,324,760,100.42/86,137.40
  6. Step 6: Final answer
    x = 50,207.69

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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.