Home / 86,421.18-129,620.84-33,867.57

Finding the Fourth Proportional to 86,421.18, 129,620.84 and 33,867.57

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Solution

The fourth proportional to 86,421.18, 129,620.84 and 33,867.57 is: 50,797.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,421.18 : 129,620.84 = 33,867.57 : x
  2. Step 2: Convert to fraction form
    86,421.18/129,620.84 = 33,867.57/x
  3. Step 3: Cross multiply
    86,421.18x = 129,620.84 × 33,867.57
  4. Step 4: Simplify right side
    86,421.18x = 4,389,942,702.82
  5. Step 5: Solve for x
    x = 4,389,942,702.82/86,421.18
  6. Step 6: Final answer
    x = 50,797.07

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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.