Home / 54,437.88-81,687.96-21,153.60

Finding the Fourth Proportional to 54,437.88, 81,687.96 and 21,153.60

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Solution

The fourth proportional to 54,437.88, 81,687.96 and 21,153.60 is: 31,742.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,437.88 : 81,687.96 = 21,153.60 : x
  2. Step 2: Convert to fraction form
    54,437.88/81,687.96 = 21,153.60/x
  3. Step 3: Cross multiply
    54,437.88x = 81,687.96 × 21,153.60
  4. Step 4: Simplify right side
    54,437.88x = 1,727,994,430.66
  5. Step 5: Solve for x
    x = 1,727,994,430.66/54,437.88
  6. Step 6: Final answer
    x = 31,742.50

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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.