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Finding the Fourth Proportional to 54,641.52, 81,913.65 and 21,354.01

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Solution

The fourth proportional to 54,641.52, 81,913.65 and 21,354.01 is: 32,012.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,641.52 : 81,913.65 = 21,354.01 : x
  2. Step 2: Convert to fraction form
    54,641.52/81,913.65 = 21,354.01/x
  3. Step 3: Cross multiply
    54,641.52x = 81,913.65 × 21,354.01
  4. Step 4: Simplify right side
    54,641.52x = 1,749,185,197.26
  5. Step 5: Solve for x
    x = 1,749,185,197.26/54,641.52
  6. Step 6: Final answer
    x = 32,012.02

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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.