Home / 78,194.28-107,954.34-51,383.72

Finding the Fourth Proportional to 78,194.28, 107,954.34 and 51,383.72

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Solution

The fourth proportional to 78,194.28, 107,954.34 and 51,383.72 is: 70,939.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,194.28 : 107,954.34 = 51,383.72 : x
  2. Step 2: Convert to fraction form
    78,194.28/107,954.34 = 51,383.72/x
  3. Step 3: Cross multiply
    78,194.28x = 107,954.34 × 51,383.72
  4. Step 4: Simplify right side
    78,194.28x = 5,547,095,579.34
  5. Step 5: Solve for x
    x = 5,547,095,579.34/78,194.28
  6. Step 6: Final answer
    x = 70,939.92

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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.