Home / 54,649.35-81,999.54-21,360.78

Finding the Fourth Proportional to 54,649.35, 81,999.54 and 21,360.78

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Solution

The fourth proportional to 54,649.35, 81,999.54 and 21,360.78 is: 32,051.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,649.35 : 81,999.54 = 21,360.78 : x
  2. Step 2: Convert to fraction form
    54,649.35/81,999.54 = 21,360.78/x
  3. Step 3: Cross multiply
    54,649.35x = 81,999.54 × 21,360.78
  4. Step 4: Simplify right side
    54,649.35x = 1,751,574,134.04
  5. Step 5: Solve for x
    x = 1,751,574,134.04/54,649.35
  6. Step 6: Final answer
    x = 32,051.14

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1.5x scale

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.