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Finding the Fourth Proportional to 78,321.74, 108,058.28 and 44,326.86

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Solution

The fourth proportional to 78,321.74, 108,058.28 and 44,326.86 is: 61,156.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,321.74 : 108,058.28 = 44,326.86 : x
  2. Step 2: Convert to fraction form
    78,321.74/108,058.28 = 44,326.86/x
  3. Step 3: Cross multiply
    78,321.74x = 108,058.28 × 44,326.86
  4. Step 4: Simplify right side
    78,321.74x = 4,789,884,249.40
  5. Step 5: Solve for x
    x = 4,789,884,249.40/78,321.74
  6. Step 6: Final answer
    x = 61,156.51

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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.