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Finding the Fourth Proportional to 78,115.51, 107,798.95 and 44,135

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Solution

The fourth proportional to 78,115.51, 107,798.95 and 44,135 is: 60,906.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,115.51 : 107,798.95 = 44,135 : x
  2. Step 2: Convert to fraction form
    78,115.51/107,798.95 = 44,135/x
  3. Step 3: Cross multiply
    78,115.51x = 107,798.95 × 44,135
  4. Step 4: Simplify right side
    78,115.51x = 4,757,706,658.25
  5. Step 5: Solve for x
    x = 4,757,706,658.25/78,115.51
  6. Step 6: Final answer
    x = 60,906.04

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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.