Home / 54,638.48-81,968.09-21,356.46

Finding the Fourth Proportional to 54,638.48, 81,968.09 and 21,356.46

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Solution

The fourth proportional to 54,638.48, 81,968.09 and 21,356.46 is: 32,038.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,638.48 : 81,968.09 = 21,356.46 : x
  2. Step 2: Convert to fraction form
    54,638.48/81,968.09 = 21,356.46/x
  3. Step 3: Cross multiply
    54,638.48x = 81,968.09 × 21,356.46
  4. Step 4: Simplify right side
    54,638.48x = 1,750,548,128.58
  5. Step 5: Solve for x
    x = 1,750,548,128.58/54,638.48
  6. Step 6: Final answer
    x = 32,038.74

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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.