Home / 72,719.20-100,402.24-55,693.36

Finding the Fourth Proportional to 72,719.20, 100,402.24 and 55,693.36

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Solution

The fourth proportional to 72,719.20, 100,402.24 and 55,693.36 is: 76,894.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,719.20 : 100,402.24 = 55,693.36 : x
  2. Step 2: Convert to fraction form
    72,719.20/100,402.24 = 55,693.36/x
  3. Step 3: Cross multiply
    72,719.20x = 100,402.24 × 55,693.36
  4. Step 4: Simplify right side
    72,719.20x = 5,591,738,097.13
  5. Step 5: Solve for x
    x = 5,591,738,097.13/72,719.20
  6. Step 6: Final answer
    x = 76,894.93

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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.