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Finding the Fourth Proportional to 45,888.80, 68,825 and 12,155.06

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Solution

The fourth proportional to 45,888.80, 68,825 and 12,155.06 is: 18,230.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,888.80 : 68,825 = 12,155.06 : x
  2. Step 2: Convert to fraction form
    45,888.80/68,825 = 12,155.06/x
  3. Step 3: Cross multiply
    45,888.80x = 68,825 × 12,155.06
  4. Step 4: Simplify right side
    45,888.80x = 836,572,004.50
  5. Step 5: Solve for x
    x = 836,572,004.50/45,888.80
  6. Step 6: Final answer
    x = 18,230.42

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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.