Home / 54,302.04-81,447.39-21,021.30

Finding the Fourth Proportional to 54,302.04, 81,447.39 and 21,021.30

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Solution

The fourth proportional to 54,302.04, 81,447.39 and 21,021.30 is: 31,529.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,302.04 : 81,447.39 = 21,021.30 : x
  2. Step 2: Convert to fraction form
    54,302.04/81,447.39 = 21,021.30/x
  3. Step 3: Cross multiply
    54,302.04x = 81,447.39 × 21,021.30
  4. Step 4: Simplify right side
    54,302.04x = 1,712,130,019.41
  5. Step 5: Solve for x
    x = 1,712,130,019.41/54,302.04
  6. Step 6: Final answer
    x = 31,529.76

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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.