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Finding the Fourth Proportional to 78,310.54, 108,072.12 and 48,089.89

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Solution

The fourth proportional to 78,310.54, 108,072.12 and 48,089.89 is: 66,366.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,310.54 : 108,072.12 = 48,089.89 : x
  2. Step 2: Convert to fraction form
    78,310.54/108,072.12 = 48,089.89/x
  3. Step 3: Cross multiply
    78,310.54x = 108,072.12 × 48,089.89
  4. Step 4: Simplify right side
    78,310.54x = 5,197,176,362.87
  5. Step 5: Solve for x
    x = 5,197,176,362.87/78,310.54
  6. Step 6: Final answer
    x = 66,366.24

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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.