Home / 45,191.78-67,806.25-19,878.26

Finding the Fourth Proportional to 45,191.78, 67,806.25 and 19,878.26

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Solution

The fourth proportional to 45,191.78, 67,806.25 and 19,878.26 is: 29,825.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,191.78 : 67,806.25 = 19,878.26 : x
  2. Step 2: Convert to fraction form
    45,191.78/67,806.25 = 19,878.26/x
  3. Step 3: Cross multiply
    45,191.78x = 67,806.25 × 19,878.26
  4. Step 4: Simplify right side
    45,191.78x = 1,347,870,267.13
  5. Step 5: Solve for x
    x = 1,347,870,267.13/45,191.78
  6. Step 6: Final answer
    x = 29,825.56

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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.