Home / 54,534.13-81,767.70-21,215.37

Finding the Fourth Proportional to 54,534.13, 81,767.70 and 21,215.37

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Solution

The fourth proportional to 54,534.13, 81,767.70 and 21,215.37 is: 31,810.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,534.13 : 81,767.70 = 21,215.37 : x
  2. Step 2: Convert to fraction form
    54,534.13/81,767.70 = 21,215.37/x
  3. Step 3: Cross multiply
    54,534.13x = 81,767.70 × 21,215.37
  4. Step 4: Simplify right side
    54,534.13x = 1,734,731,600.71
  5. Step 5: Solve for x
    x = 1,734,731,600.71/54,534.13
  6. Step 6: Final answer
    x = 31,810.02

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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.