Home / 45,110.40-67,665.60-18,806.40

Finding the Fourth Proportional to 45,110.40, 67,665.60 and 18,806.40

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Solution

The fourth proportional to 45,110.40, 67,665.60 and 18,806.40 is: 28,209.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,110.40 : 67,665.60 = 18,806.40 : x
  2. Step 2: Convert to fraction form
    45,110.40/67,665.60 = 18,806.40/x
  3. Step 3: Cross multiply
    45,110.40x = 67,665.60 × 18,806.40
  4. Step 4: Simplify right side
    45,110.40x = 1,272,546,339.84
  5. Step 5: Solve for x
    x = 1,272,546,339.84/45,110.40
  6. Step 6: Final answer
    x = 28,209.60

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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.