Home / 45,358.55-68,041.26-12,078.48

Finding the Fourth Proportional to 45,358.55, 68,041.26 and 12,078.48

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Solution

The fourth proportional to 45,358.55, 68,041.26 and 12,078.48 is: 18,118.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,358.55 : 68,041.26 = 12,078.48 : x
  2. Step 2: Convert to fraction form
    45,358.55/68,041.26 = 12,078.48/x
  3. Step 3: Cross multiply
    45,358.55x = 68,041.26 × 12,078.48
  4. Step 4: Simplify right side
    45,358.55x = 821,834,998.08
  5. Step 5: Solve for x
    x = 821,834,998.08/45,358.55
  6. Step 6: Final answer
    x = 18,118.64

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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.