Home / 78,405.36-108,244.25-51,625.68

Finding the Fourth Proportional to 78,405.36, 108,244.25 and 51,625.68

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Solution

The fourth proportional to 78,405.36, 108,244.25 and 51,625.68 is: 71,272.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,405.36 : 108,244.25 = 51,625.68 : x
  2. Step 2: Convert to fraction form
    78,405.36/108,244.25 = 51,625.68/x
  3. Step 3: Cross multiply
    78,405.36x = 108,244.25 × 51,625.68
  4. Step 4: Simplify right side
    78,405.36x = 5,588,183,012.34
  5. Step 5: Solve for x
    x = 5,588,183,012.34/78,405.36
  6. Step 6: Final answer
    x = 71,272.97

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1.5x scale

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.