Home / 91,391.26-126,122.70-51,106.72

Finding the Fourth Proportional to 91,391.26, 126,122.70 and 51,106.72

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Solution

The fourth proportional to 91,391.26, 126,122.70 and 51,106.72 is: 70,528.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,391.26 : 126,122.70 = 51,106.72 : x
  2. Step 2: Convert to fraction form
    91,391.26/126,122.70 = 51,106.72/x
  3. Step 3: Cross multiply
    91,391.26x = 126,122.70 × 51,106.72
  4. Step 4: Simplify right side
    91,391.26x = 6,445,717,514.54
  5. Step 5: Solve for x
    x = 6,445,717,514.54/91,391.26
  6. Step 6: Final answer
    x = 70,528.82

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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.