Home / 54,437.19-81,624-21,118.32

Finding the Fourth Proportional to 54,437.19, 81,624 and 21,118.32

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Solution

The fourth proportional to 54,437.19, 81,624 and 21,118.32 is: 31,665.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,437.19 : 81,624 = 21,118.32 : x
  2. Step 2: Convert to fraction form
    54,437.19/81,624 = 21,118.32/x
  3. Step 3: Cross multiply
    54,437.19x = 81,624 × 21,118.32
  4. Step 4: Simplify right side
    54,437.19x = 1,723,761,751.68
  5. Step 5: Solve for x
    x = 1,723,761,751.68/54,437.19
  6. Step 6: Final answer
    x = 31,665.15

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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.