Home / 91,998.78-126,956.80-51,161.28

Finding the Fourth Proportional to 91,998.78, 126,956.80 and 51,161.28

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Solution

The fourth proportional to 91,998.78, 126,956.80 and 51,161.28 is: 70,601.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,998.78 : 126,956.80 = 51,161.28 : x
  2. Step 2: Convert to fraction form
    91,998.78/126,956.80 = 51,161.28/x
  3. Step 3: Cross multiply
    91,998.78x = 126,956.80 × 51,161.28
  4. Step 4: Simplify right side
    91,998.78x = 6,495,272,392.70
  5. Step 5: Solve for x
    x = 6,495,272,392.70/91,998.78
  6. Step 6: Final answer
    x = 70,601.72

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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.