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Finding the Fourth Proportional to 45,208.56, 67,805.10 and 11,928.98

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Solution

The fourth proportional to 45,208.56, 67,805.10 and 11,928.98 is: 17,891.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,208.56 : 67,805.10 = 11,928.98 : x
  2. Step 2: Convert to fraction form
    45,208.56/67,805.10 = 11,928.98/x
  3. Step 3: Cross multiply
    45,208.56x = 67,805.10 × 11,928.98
  4. Step 4: Simplify right side
    45,208.56x = 808,845,681.80
  5. Step 5: Solve for x
    x = 808,845,681.80/45,208.56
  6. Step 6: Final answer
    x = 17,891.43

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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.