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Finding the Fourth Proportional to 42,055.88, 63,083.10 and 19,879.88

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Solution

The fourth proportional to 42,055.88, 63,083.10 and 19,879.88 is: 29,819.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,055.88 : 63,083.10 = 19,879.88 : x
  2. Step 2: Convert to fraction form
    42,055.88/63,083.10 = 19,879.88/x
  3. Step 3: Cross multiply
    42,055.88x = 63,083.10 × 19,879.88
  4. Step 4: Simplify right side
    42,055.88x = 1,254,084,458.03
  5. Step 5: Solve for x
    x = 1,254,084,458.03/42,055.88
  6. Step 6: Final answer
    x = 29,819.48

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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.