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Finding the Fourth Proportional to 56,843.96, 78,444.84 and 31,694.36

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Solution

The fourth proportional to 56,843.96, 78,444.84 and 31,694.36 is: 43,738.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,843.96 : 78,444.84 = 31,694.36 : x
  2. Step 2: Convert to fraction form
    56,843.96/78,444.84 = 31,694.36/x
  3. Step 3: Cross multiply
    56,843.96x = 78,444.84 × 31,694.36
  4. Step 4: Simplify right side
    56,843.96x = 2,486,258,999.10
  5. Step 5: Solve for x
    x = 2,486,258,999.10/56,843.96
  6. Step 6: Final answer
    x = 43,738.31

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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.