Home / 54,480.68-81,729.24-19,417.64

Finding the Fourth Proportional to 54,480.68, 81,729.24 and 19,417.64

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Solution

The fourth proportional to 54,480.68, 81,729.24 and 19,417.64 is: 29,129.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,480.68 : 81,729.24 = 19,417.64 : x
  2. Step 2: Convert to fraction form
    54,480.68/81,729.24 = 19,417.64/x
  3. Step 3: Cross multiply
    54,480.68x = 81,729.24 × 19,417.64
  4. Step 4: Simplify right side
    54,480.68x = 1,586,988,959.79
  5. Step 5: Solve for x
    x = 1,586,988,959.79/54,480.68
  6. Step 6: Final answer
    x = 29,129.39

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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.