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Finding the Fourth Proportional to 53,978, 74,487.48 and 30,104.48

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Solution

The fourth proportional to 53,978, 74,487.48 and 30,104.48 is: 41,542.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,978 : 74,487.48 = 30,104.48 : x
  2. Step 2: Convert to fraction form
    53,978/74,487.48 = 30,104.48/x
  3. Step 3: Cross multiply
    53,978x = 74,487.48 × 30,104.48
  4. Step 4: Simplify right side
    53,978x = 2,242,406,851.91
  5. Step 5: Solve for x
    x = 2,242,406,851.91/53,978
  6. Step 6: Final answer
    x = 41,542.98

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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.