Home / 45,081.28-67,628.08-18,779.88

Finding the Fourth Proportional to 45,081.28, 67,628.08 and 18,779.88

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Solution

The fourth proportional to 45,081.28, 67,628.08 and 18,779.88 is: 28,172.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,081.28 : 67,628.08 = 18,779.88 : x
  2. Step 2: Convert to fraction form
    45,081.28/67,628.08 = 18,779.88/x
  3. Step 3: Cross multiply
    45,081.28x = 67,628.08 × 18,779.88
  4. Step 4: Simplify right side
    45,081.28x = 1,270,047,227.03
  5. Step 5: Solve for x
    x = 1,270,047,227.03/45,081.28
  6. Step 6: Final answer
    x = 28,172.39

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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.