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Finding the Fourth Proportional to 78,367.68, 108,180.51 and 52,908.53

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Solution

The fourth proportional to 78,367.68, 108,180.51 and 52,908.53 is: 73,036.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,367.68 : 108,180.51 = 52,908.53 : x
  2. Step 2: Convert to fraction form
    78,367.68/108,180.51 = 52,908.53/x
  3. Step 3: Cross multiply
    78,367.68x = 108,180.51 × 52,908.53
  4. Step 4: Simplify right side
    78,367.68x = 5,723,671,896.93
  5. Step 5: Solve for x
    x = 5,723,671,896.93/78,367.68
  6. Step 6: Final answer
    x = 73,036.12

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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.