Home / 77,839.50-116,759.36-21,679.77

Finding the Fourth Proportional to 77,839.50, 116,759.36 and 21,679.77

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Solution

The fourth proportional to 77,839.50, 116,759.36 and 21,679.77 is: 32,519.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,839.50 : 116,759.36 = 21,679.77 : x
  2. Step 2: Convert to fraction form
    77,839.50/116,759.36 = 21,679.77/x
  3. Step 3: Cross multiply
    77,839.50x = 116,759.36 × 21,679.77
  4. Step 4: Simplify right side
    77,839.50x = 2,531,316,562.19
  5. Step 5: Solve for x
    x = 2,531,316,562.19/77,839.50
  6. Step 6: Final answer
    x = 32,519.69

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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.