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Finding the Fourth Proportional to 45,555, 68,332.62 and 12,723

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Solution

The fourth proportional to 45,555, 68,332.62 and 12,723 is: 19,084.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,555 : 68,332.62 = 12,723 : x
  2. Step 2: Convert to fraction form
    45,555/68,332.62 = 12,723/x
  3. Step 3: Cross multiply
    45,555x = 68,332.62 × 12,723
  4. Step 4: Simplify right side
    45,555x = 869,395,924.26
  5. Step 5: Solve for x
    x = 869,395,924.26/45,555
  6. Step 6: Final answer
    x = 19,084.53

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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.