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Finding the Fourth Proportional to 54,562.52, 81,810.83 and 21,276.20

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Solution

The fourth proportional to 54,562.52, 81,810.83 and 21,276.20 is: 31,901.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,562.52 : 81,810.83 = 21,276.20 : x
  2. Step 2: Convert to fraction form
    54,562.52/81,810.83 = 21,276.20/x
  3. Step 3: Cross multiply
    54,562.52x = 81,810.83 × 21,276.20
  4. Step 4: Simplify right side
    54,562.52x = 1,740,623,225.38
  5. Step 5: Solve for x
    x = 1,740,623,225.38/54,562.52
  6. Step 6: Final answer
    x = 31,901.45

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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.