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Finding the Fourth Proportional to 56,134, 77,436.97 and 39,173.82

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Solution

The fourth proportional to 56,134, 77,436.97 and 39,173.82 is: 54,040.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,134 : 77,436.97 = 39,173.82 : x
  2. Step 2: Convert to fraction form
    56,134/77,436.97 = 39,173.82/x
  3. Step 3: Cross multiply
    56,134x = 77,436.97 × 39,173.82
  4. Step 4: Simplify right side
    56,134x = 3,033,501,924.13
  5. Step 5: Solve for x
    x = 3,033,501,924.13/56,134
  6. Step 6: Final answer
    x = 54,040.37

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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.