Home / 54,922.72-82,390.48-19,878.88

Finding the Fourth Proportional to 54,922.72, 82,390.48 and 19,878.88

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Solution

The fourth proportional to 54,922.72, 82,390.48 and 19,878.88 is: 29,820.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,922.72 : 82,390.48 = 19,878.88 : x
  2. Step 2: Convert to fraction form
    54,922.72/82,390.48 = 19,878.88/x
  3. Step 3: Cross multiply
    54,922.72x = 82,390.48 × 19,878.88
  4. Step 4: Simplify right side
    54,922.72x = 1,637,830,465.06
  5. Step 5: Solve for x
    x = 1,637,830,465.06/54,922.72
  6. Step 6: Final answer
    x = 29,820.64

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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.