Home / 91,391.45-126,131.92-51,107.45

Finding the Fourth Proportional to 91,391.45, 126,131.92 and 51,107.45

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Solution

The fourth proportional to 91,391.45, 126,131.92 and 51,107.45 is: 70,534.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,391.45 : 126,131.92 = 51,107.45 : x
  2. Step 2: Convert to fraction form
    91,391.45/126,131.92 = 51,107.45/x
  3. Step 3: Cross multiply
    91,391.45x = 126,131.92 × 51,107.45
  4. Step 4: Simplify right side
    91,391.45x = 6,446,280,036.38
  5. Step 5: Solve for x
    x = 6,446,280,036.38/91,391.45
  6. Step 6: Final answer
    x = 70,534.83

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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.