Home / 77,839.35-116,759.10-21,679.58

Finding the Fourth Proportional to 77,839.35, 116,759.10 and 21,679.58

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Solution

The fourth proportional to 77,839.35, 116,759.10 and 21,679.58 is: 32,519.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,839.35 : 116,759.10 = 21,679.58 : x
  2. Step 2: Convert to fraction form
    77,839.35/116,759.10 = 21,679.58/x
  3. Step 3: Cross multiply
    77,839.35x = 116,759.10 × 21,679.58
  4. Step 4: Simplify right side
    77,839.35x = 2,531,287,665.38
  5. Step 5: Solve for x
    x = 2,531,287,665.38/77,839.35
  6. Step 6: Final answer
    x = 32,519.38

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1.5x scale

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.