Home / 78,407.36-108,247-51,627.68

Finding the Fourth Proportional to 78,407.36, 108,247 and 51,627.68

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Solution

The fourth proportional to 78,407.36, 108,247 and 51,627.68 is: 71,275.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,407.36 : 108,247 = 51,627.68 : x
  2. Step 2: Convert to fraction form
    78,407.36/108,247 = 51,627.68/x
  3. Step 3: Cross multiply
    78,407.36x = 108,247 × 51,627.68
  4. Step 4: Simplify right side
    78,407.36x = 5,588,541,476.96
  5. Step 5: Solve for x
    x = 5,588,541,476.96/78,407.36
  6. Step 6: Final answer
    x = 71,275.73

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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.