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Finding the Fourth Proportional to 47,828.07, 71,736.66 and 12,765

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Solution

The fourth proportional to 47,828.07, 71,736.66 and 12,765 is: 19,146.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,828.07 : 71,736.66 = 12,765 : x
  2. Step 2: Convert to fraction form
    47,828.07/71,736.66 = 12,765/x
  3. Step 3: Cross multiply
    47,828.07x = 71,736.66 × 12,765
  4. Step 4: Simplify right side
    47,828.07x = 915,718,464.90
  5. Step 5: Solve for x
    x = 915,718,464.90/47,828.07
  6. Step 6: Final answer
    x = 19,146.05

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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.