Home / 78,865.36-108,829.56-45,331.36

Finding the Fourth Proportional to 78,865.36, 108,829.56 and 45,331.36

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Solution

The fourth proportional to 78,865.36, 108,829.56 and 45,331.36 is: 62,554.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,865.36 : 108,829.56 = 45,331.36 : x
  2. Step 2: Convert to fraction form
    78,865.36/108,829.56 = 45,331.36/x
  3. Step 3: Cross multiply
    78,865.36x = 108,829.56 × 45,331.36
  4. Step 4: Simplify right side
    78,865.36x = 4,933,391,963.00
  5. Step 5: Solve for x
    x = 4,933,391,963.00/78,865.36
  6. Step 6: Final answer
    x = 62,554.61

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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.