Home / 77,977.83-107,645.18-51,121.47

Finding the Fourth Proportional to 77,977.83, 107,645.18 and 51,121.47

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Solution

The fourth proportional to 77,977.83, 107,645.18 and 51,121.47 is: 70,571.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,977.83 : 107,645.18 = 51,121.47 : x
  2. Step 2: Convert to fraction form
    77,977.83/107,645.18 = 51,121.47/x
  3. Step 3: Cross multiply
    77,977.83x = 107,645.18 × 51,121.47
  4. Step 4: Simplify right side
    77,977.83x = 5,502,979,584.41
  5. Step 5: Solve for x
    x = 5,502,979,584.41/77,977.83
  6. Step 6: Final answer
    x = 70,571.08

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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.