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Finding the Fourth Proportional to 72,795.69, 100,437.86 and 43,716.56

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Solution

The fourth proportional to 72,795.69, 100,437.86 and 43,716.56 is: 60,316.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,795.69 : 100,437.86 = 43,716.56 : x
  2. Step 2: Convert to fraction form
    72,795.69/100,437.86 = 43,716.56/x
  3. Step 3: Cross multiply
    72,795.69x = 100,437.86 × 43,716.56
  4. Step 4: Simplify right side
    72,795.69x = 4,390,797,340.06
  5. Step 5: Solve for x
    x = 4,390,797,340.06/72,795.69
  6. Step 6: Final answer
    x = 60,316.72

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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.