Home / 45,088.42-67,638.78-18,787

Finding the Fourth Proportional to 45,088.42, 67,638.78 and 18,787

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Solution

The fourth proportional to 45,088.42, 67,638.78 and 18,787 is: 28,183.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,088.42 : 67,638.78 = 18,787 : x
  2. Step 2: Convert to fraction form
    45,088.42/67,638.78 = 18,787/x
  3. Step 3: Cross multiply
    45,088.42x = 67,638.78 × 18,787
  4. Step 4: Simplify right side
    45,088.42x = 1,270,729,759.86
  5. Step 5: Solve for x
    x = 1,270,729,759.86/45,088.42
  6. Step 6: Final answer
    x = 28,183.06

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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.