Home / 45,945.86-68,919.10-12,667.72

Finding the Fourth Proportional to 45,945.86, 68,919.10 and 12,667.72

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Solution

The fourth proportional to 45,945.86, 68,919.10 and 12,667.72 is: 19,001.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,945.86 : 68,919.10 = 12,667.72 : x
  2. Step 2: Convert to fraction form
    45,945.86/68,919.10 = 12,667.72/x
  3. Step 3: Cross multiply
    45,945.86x = 68,919.10 × 12,667.72
  4. Step 4: Simplify right side
    45,945.86x = 873,047,861.45
  5. Step 5: Solve for x
    x = 873,047,861.45/45,945.86
  6. Step 6: Final answer
    x = 19,001.67

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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.