Home / 45,478.80-68,189.61-13,878.37

Finding the Fourth Proportional to 45,478.80, 68,189.61 and 13,878.37

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Solution

The fourth proportional to 45,478.80, 68,189.61 and 13,878.37 is: 20,808.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,478.80 : 68,189.61 = 13,878.37 : x
  2. Step 2: Convert to fraction form
    45,478.80/68,189.61 = 13,878.37/x
  3. Step 3: Cross multiply
    45,478.80x = 68,189.61 × 13,878.37
  4. Step 4: Simplify right side
    45,478.80x = 946,360,775.02
  5. Step 5: Solve for x
    x = 946,360,775.02/45,478.80
  6. Step 6: Final answer
    x = 20,808.83

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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.