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Finding the Fourth Proportional to 77,287.74, 115,733.25 and 53,561.49

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Solution

The fourth proportional to 77,287.74, 115,733.25 and 53,561.49 is: 80,204.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,287.74 : 115,733.25 = 53,561.49 : x
  2. Step 2: Convert to fraction form
    77,287.74/115,733.25 = 53,561.49/x
  3. Step 3: Cross multiply
    77,287.74x = 115,733.25 × 53,561.49
  4. Step 4: Simplify right side
    77,287.74x = 6,198,845,312.54
  5. Step 5: Solve for x
    x = 6,198,845,312.54/77,287.74
  6. Step 6: Final answer
    x = 80,204.77

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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.