Home / 45,081.16-67,627.89-18,779.75

Finding the Fourth Proportional to 45,081.16, 67,627.89 and 18,779.75

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Solution

The fourth proportional to 45,081.16, 67,627.89 and 18,779.75 is: 28,172.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,081.16 : 67,627.89 = 18,779.75 : x
  2. Step 2: Convert to fraction form
    45,081.16/67,627.89 = 18,779.75/x
  3. Step 3: Cross multiply
    45,081.16x = 67,627.89 × 18,779.75
  4. Step 4: Simplify right side
    45,081.16x = 1,270,034,867.23
  5. Step 5: Solve for x
    x = 1,270,034,867.23/45,081.16
  6. Step 6: Final answer
    x = 28,172.19

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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.