Home / 54,259.40-81,381.30-20,995.16

Finding the Fourth Proportional to 54,259.40, 81,381.30 and 20,995.16

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Solution

The fourth proportional to 54,259.40, 81,381.30 and 20,995.16 is: 31,489.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,259.40 : 81,381.30 = 20,995.16 : x
  2. Step 2: Convert to fraction form
    54,259.40/81,381.30 = 20,995.16/x
  3. Step 3: Cross multiply
    54,259.40x = 81,381.30 × 20,995.16
  4. Step 4: Simplify right side
    54,259.40x = 1,708,613,414.51
  5. Step 5: Solve for x
    x = 1,708,613,414.51/54,259.40
  6. Step 6: Final answer
    x = 31,489.72

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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.