Home / 86,427.80-129,648.36-33,145.30

Finding the Fourth Proportional to 86,427.80, 129,648.36 and 33,145.30

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Solution

The fourth proportional to 86,427.80, 129,648.36 and 33,145.30 is: 49,720.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,427.80 : 129,648.36 = 33,145.30 : x
  2. Step 2: Convert to fraction form
    86,427.80/129,648.36 = 33,145.30/x
  3. Step 3: Cross multiply
    86,427.80x = 129,648.36 × 33,145.30
  4. Step 4: Simplify right side
    86,427.80x = 4,297,233,786.71
  5. Step 5: Solve for x
    x = 4,297,233,786.71/86,427.80
  6. Step 6: Final answer
    x = 49,720.50

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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.