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Finding the Fourth Proportional to 77,293.68, 115,960.68 and 21,889.68

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Solution

The fourth proportional to 77,293.68, 115,960.68 and 21,889.68 is: 32,840.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,293.68 : 115,960.68 = 21,889.68 : x
  2. Step 2: Convert to fraction form
    77,293.68/115,960.68 = 21,889.68/x
  3. Step 3: Cross multiply
    77,293.68x = 115,960.68 × 21,889.68
  4. Step 4: Simplify right side
    77,293.68x = 2,538,342,177.78
  5. Step 5: Solve for x
    x = 2,538,342,177.78/77,293.68
  6. Step 6: Final answer
    x = 32,840.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.