Home / 77,839.88-107,377.53-47,639.84

Finding the Fourth Proportional to 77,839.88, 107,377.53 and 47,639.84

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Solution

The fourth proportional to 77,839.88, 107,377.53 and 47,639.84 is: 65,717.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,839.88 : 107,377.53 = 47,639.84 : x
  2. Step 2: Convert to fraction form
    77,839.88/107,377.53 = 47,639.84/x
  3. Step 3: Cross multiply
    77,839.88x = 107,377.53 × 47,639.84
  4. Step 4: Simplify right side
    77,839.88x = 5,115,448,348.80
  5. Step 5: Solve for x
    x = 5,115,448,348.80/77,839.88
  6. Step 6: Final answer
    x = 65,717.58

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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.