Home / 54,426.48-81,657.90-21,147.60

Finding the Fourth Proportional to 54,426.48, 81,657.90 and 21,147.60

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Solution

The fourth proportional to 54,426.48, 81,657.90 and 21,147.60 is: 31,728.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,426.48 : 81,657.90 = 21,147.60 : x
  2. Step 2: Convert to fraction form
    54,426.48/81,657.90 = 21,147.60/x
  3. Step 3: Cross multiply
    54,426.48x = 81,657.90 × 21,147.60
  4. Step 4: Simplify right side
    54,426.48x = 1,726,868,606.04
  5. Step 5: Solve for x
    x = 1,726,868,606.04/54,426.48
  6. Step 6: Final answer
    x = 31,728.46

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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.