Home / 45,709.40-68,564.10-28,122.20

Finding the Fourth Proportional to 45,709.40, 68,564.10 and 28,122.20

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Solution

The fourth proportional to 45,709.40, 68,564.10 and 28,122.20 is: 42,183.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,709.40 : 68,564.10 = 28,122.20 : x
  2. Step 2: Convert to fraction form
    45,709.40/68,564.10 = 28,122.20/x
  3. Step 3: Cross multiply
    45,709.40x = 68,564.10 × 28,122.20
  4. Step 4: Simplify right side
    45,709.40x = 1,928,173,333.02
  5. Step 5: Solve for x
    x = 1,928,173,333.02/45,709.40
  6. Step 6: Final answer
    x = 42,183.30

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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.