Home / 86,434.32-129,647.16-33,853.44

Finding the Fourth Proportional to 86,434.32, 129,647.16 and 33,853.44

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Solution

The fourth proportional to 86,434.32, 129,647.16 and 33,853.44 is: 50,778.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,434.32 : 129,647.16 = 33,853.44 : x
  2. Step 2: Convert to fraction form
    86,434.32/129,647.16 = 33,853.44/x
  3. Step 3: Cross multiply
    86,434.32x = 129,647.16 × 33,853.44
  4. Step 4: Simplify right side
    86,434.32x = 4,389,002,352.23
  5. Step 5: Solve for x
    x = 4,389,002,352.23/86,434.32
  6. Step 6: Final answer
    x = 50,778.47

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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.