Home / 91,431.14-126,174.39-51,144.71

Finding the Fourth Proportional to 91,431.14, 126,174.39 and 51,144.71

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Solution

The fourth proportional to 91,431.14, 126,174.39 and 51,144.71 is: 70,579.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,431.14 : 126,174.39 = 51,144.71 : x
  2. Step 2: Convert to fraction form
    91,431.14/126,174.39 = 51,144.71/x
  3. Step 3: Cross multiply
    91,431.14x = 126,174.39 × 51,144.71
  4. Step 4: Simplify right side
    91,431.14x = 6,453,152,585.98
  5. Step 5: Solve for x
    x = 6,453,152,585.98/91,431.14
  6. Step 6: Final answer
    x = 70,579.37

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Double scale
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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.