Home / 45,389.58-68,060.88-20,408.28

Finding the Fourth Proportional to 45,389.58, 68,060.88 and 20,408.28

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Solution

The fourth proportional to 45,389.58, 68,060.88 and 20,408.28 is: 30,601.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,389.58 : 68,060.88 = 20,408.28 : x
  2. Step 2: Convert to fraction form
    45,389.58/68,060.88 = 20,408.28/x
  3. Step 3: Cross multiply
    45,389.58x = 68,060.88 × 20,408.28
  4. Step 4: Simplify right side
    45,389.58x = 1,389,005,496.09
  5. Step 5: Solve for x
    x = 1,389,005,496.09/45,389.58
  6. Step 6: Final answer
    x = 30,601.86

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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.