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Finding the Fourth Proportional to 61,412.52, 92,131.76 and 19,888.68

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Solution

The fourth proportional to 61,412.52, 92,131.76 and 19,888.68 is: 29,837.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,412.52 : 92,131.76 = 19,888.68 : x
  2. Step 2: Convert to fraction form
    61,412.52/92,131.76 = 19,888.68/x
  3. Step 3: Cross multiply
    61,412.52x = 92,131.76 × 19,888.68
  4. Step 4: Simplify right side
    61,412.52x = 1,832,379,092.48
  5. Step 5: Solve for x
    x = 1,832,379,092.48/61,412.52
  6. Step 6: Final answer
    x = 29,837.22

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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.