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Finding the Fourth Proportional to 45,605.70, 68,443.11 and 19,328.76

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Solution

The fourth proportional to 45,605.70, 68,443.11 and 19,328.76 is: 29,007.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,605.70 : 68,443.11 = 19,328.76 : x
  2. Step 2: Convert to fraction form
    45,605.70/68,443.11 = 19,328.76/x
  3. Step 3: Cross multiply
    45,605.70x = 68,443.11 × 19,328.76
  4. Step 4: Simplify right side
    45,605.70x = 1,322,920,446.84
  5. Step 5: Solve for x
    x = 1,322,920,446.84/45,605.70
  6. Step 6: Final answer
    x = 29,007.79

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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.