Home / 91,961.12-126,910.10-51,674.76

Finding the Fourth Proportional to 91,961.12, 126,910.10 and 51,674.76

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Solution

The fourth proportional to 91,961.12, 126,910.10 and 51,674.76 is: 71,313.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,961.12 : 126,910.10 = 51,674.76 : x
  2. Step 2: Convert to fraction form
    91,961.12/126,910.10 = 51,674.76/x
  3. Step 3: Cross multiply
    91,961.12x = 126,910.10 × 51,674.76
  4. Step 4: Simplify right side
    91,961.12x = 6,558,048,959.08
  5. Step 5: Solve for x
    x = 6,558,048,959.08/91,961.12
  6. Step 6: Final answer
    x = 71,313.28

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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.