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Finding the Fourth Proportional to 78,398.66, 108,166.31 and 44,401.75

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Solution

The fourth proportional to 78,398.66, 108,166.31 and 44,401.75 is: 61,260.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,398.66 : 108,166.31 = 44,401.75 : x
  2. Step 2: Convert to fraction form
    78,398.66/108,166.31 = 44,401.75/x
  3. Step 3: Cross multiply
    78,398.66x = 108,166.31 × 44,401.75
  4. Step 4: Simplify right side
    78,398.66x = 4,802,772,914.21
  5. Step 5: Solve for x
    x = 4,802,772,914.21/78,398.66
  6. Step 6: Final answer
    x = 61,260.91

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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.