Home / 91,893.36-126,861-61,836.72

Finding the Fourth Proportional to 91,893.36, 126,861 and 61,836.72

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Solution

The fourth proportional to 91,893.36, 126,861 and 61,836.72 is: 85,367.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,893.36 : 126,861 = 61,836.72 : x
  2. Step 2: Convert to fraction form
    91,893.36/126,861 = 61,836.72/x
  3. Step 3: Cross multiply
    91,893.36x = 126,861 × 61,836.72
  4. Step 4: Simplify right side
    91,893.36x = 7,844,668,135.92
  5. Step 5: Solve for x
    x = 7,844,668,135.92/91,893.36
  6. Step 6: Final answer
    x = 85,367.08

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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.