Home / 78,520.84-108,394.14-51,677.44

Finding the Fourth Proportional to 78,520.84, 108,394.14 and 51,677.44

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Solution

The fourth proportional to 78,520.84, 108,394.14 and 51,677.44 is: 71,338.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,520.84 : 108,394.14 = 51,677.44 : x
  2. Step 2: Convert to fraction form
    78,520.84/108,394.14 = 51,677.44/x
  3. Step 3: Cross multiply
    78,520.84x = 108,394.14 × 51,677.44
  4. Step 4: Simplify right side
    78,520.84x = 5,601,531,666.20
  5. Step 5: Solve for x
    x = 5,601,531,666.20/78,520.84
  6. Step 6: Final answer
    x = 71,338.15

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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.