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Finding the Fourth Proportional to 71,053.78, 98,054.20 and 39,222.68

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Solution

The fourth proportional to 71,053.78, 98,054.20 and 39,222.68 is: 54,127.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,053.78 : 98,054.20 = 39,222.68 : x
  2. Step 2: Convert to fraction form
    71,053.78/98,054.20 = 39,222.68/x
  3. Step 3: Cross multiply
    71,053.78x = 98,054.20 × 39,222.68
  4. Step 4: Simplify right side
    71,053.78x = 3,845,948,509.26
  5. Step 5: Solve for x
    x = 3,845,948,509.26/71,053.78
  6. Step 6: Final answer
    x = 54,127.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.