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Finding the Fourth Proportional to 45,805.82, 68,718.52 and 14,215.18

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Solution

The fourth proportional to 45,805.82, 68,718.52 and 14,215.18 is: 21,325.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,805.82 : 68,718.52 = 14,215.18 : x
  2. Step 2: Convert to fraction form
    45,805.82/68,718.52 = 14,215.18/x
  3. Step 3: Cross multiply
    45,805.82x = 68,718.52 × 14,215.18
  4. Step 4: Simplify right side
    45,805.82x = 976,846,131.13
  5. Step 5: Solve for x
    x = 976,846,131.13/45,805.82
  6. Step 6: Final answer
    x = 21,325.81

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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.