Home / 91,578.38-126,349.47-51,286.70

Finding the Fourth Proportional to 91,578.38, 126,349.47 and 51,286.70

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Solution

The fourth proportional to 91,578.38, 126,349.47 and 51,286.70 is: 70,759.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,578.38 : 126,349.47 = 51,286.70 : x
  2. Step 2: Convert to fraction form
    91,578.38/126,349.47 = 51,286.70/x
  3. Step 3: Cross multiply
    91,578.38x = 126,349.47 × 51,286.70
  4. Step 4: Simplify right side
    91,578.38x = 6,480,047,363.05
  5. Step 5: Solve for x
    x = 6,480,047,363.05/91,578.38
  6. Step 6: Final answer
    x = 70,759.58

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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.