Home / 78,822.98-108,774.81-43,013.60

Finding the Fourth Proportional to 78,822.98, 108,774.81 and 43,013.60

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Solution

The fourth proportional to 78,822.98, 108,774.81 and 43,013.60 is: 59,358.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,822.98 : 108,774.81 = 43,013.60 : x
  2. Step 2: Convert to fraction form
    78,822.98/108,774.81 = 43,013.60/x
  3. Step 3: Cross multiply
    78,822.98x = 108,774.81 × 43,013.60
  4. Step 4: Simplify right side
    78,822.98x = 4,678,795,623.54
  5. Step 5: Solve for x
    x = 4,678,795,623.54/78,822.98
  6. Step 6: Final answer
    x = 59,358.27

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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.