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Finding the Fourth Proportional to 54,620.66, 81,911.16 and 19,072

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Solution

The fourth proportional to 54,620.66, 81,911.16 and 19,072 is: 28,601.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,620.66 : 81,911.16 = 19,072 : x
  2. Step 2: Convert to fraction form
    54,620.66/81,911.16 = 19,072/x
  3. Step 3: Cross multiply
    54,620.66x = 81,911.16 × 19,072
  4. Step 4: Simplify right side
    54,620.66x = 1,562,209,643.52
  5. Step 5: Solve for x
    x = 1,562,209,643.52/54,620.66
  6. Step 6: Final answer
    x = 28,601.08

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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.