Home / 54,405.40-81,608.10-51,343.60

Finding the Fourth Proportional to 54,405.40, 81,608.10 and 51,343.60

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Solution

The fourth proportional to 54,405.40, 81,608.10 and 51,343.60 is: 77,015.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,405.40 : 81,608.10 = 51,343.60 : x
  2. Step 2: Convert to fraction form
    54,405.40/81,608.10 = 51,343.60/x
  3. Step 3: Cross multiply
    54,405.40x = 81,608.10 × 51,343.60
  4. Step 4: Simplify right side
    54,405.40x = 4,190,053,643.16
  5. Step 5: Solve for x
    x = 4,190,053,643.16/54,405.40
  6. Step 6: Final answer
    x = 77,015.40

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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.