Home / 77,379.09-106,087.72-75,979.41

Finding the Fourth Proportional to 77,379.09, 106,087.72 and 75,979.41

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Solution

The fourth proportional to 77,379.09, 106,087.72 and 75,979.41 is: 104,168.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,379.09 : 106,087.72 = 75,979.41 : x
  2. Step 2: Convert to fraction form
    77,379.09/106,087.72 = 75,979.41/x
  3. Step 3: Cross multiply
    77,379.09x = 106,087.72 × 75,979.41
  4. Step 4: Simplify right side
    77,379.09x = 8,060,482,373.85
  5. Step 5: Solve for x
    x = 8,060,482,373.85/77,379.09
  6. Step 6: Final answer
    x = 104,168.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.