Home / 77,759.50-107,317.56-43,780.72

Finding the Fourth Proportional to 77,759.50, 107,317.56 and 43,780.72

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Solution

The fourth proportional to 77,759.50, 107,317.56 and 43,780.72 is: 60,422.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,759.50 : 107,317.56 = 43,780.72 : x
  2. Step 2: Convert to fraction form
    77,759.50/107,317.56 = 43,780.72/x
  3. Step 3: Cross multiply
    77,759.50x = 107,317.56 × 43,780.72
  4. Step 4: Simplify right side
    77,759.50x = 4,698,440,045.44
  5. Step 5: Solve for x
    x = 4,698,440,045.44/77,759.50
  6. Step 6: Final answer
    x = 60,422.71

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1.5x scale

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.