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Finding the Fourth Proportional to 54,460.76, 81,690.84 and 21,203.96

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Solution

The fourth proportional to 54,460.76, 81,690.84 and 21,203.96 is: 31,805.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,460.76 : 81,690.84 = 21,203.96 : x
  2. Step 2: Convert to fraction form
    54,460.76/81,690.84 = 21,203.96/x
  3. Step 3: Cross multiply
    54,460.76x = 81,690.84 × 21,203.96
  4. Step 4: Simplify right side
    54,460.76x = 1,732,169,303.73
  5. Step 5: Solve for x
    x = 1,732,169,303.73/54,460.76
  6. Step 6: Final answer
    x = 31,805.82

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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.