Home / 77,106.77-115,644.66-27,188.90

Finding the Fourth Proportional to 77,106.77, 115,644.66 and 27,188.90

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Solution

The fourth proportional to 77,106.77, 115,644.66 and 27,188.90 is: 40,777.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,106.77 : 115,644.66 = 27,188.90 : x
  2. Step 2: Convert to fraction form
    77,106.77/115,644.66 = 27,188.90/x
  3. Step 3: Cross multiply
    77,106.77x = 115,644.66 × 27,188.90
  4. Step 4: Simplify right side
    77,106.77x = 3,144,251,096.27
  5. Step 5: Solve for x
    x = 3,144,251,096.27/77,106.77
  6. Step 6: Final answer
    x = 40,777.89

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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.