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Finding the Fourth Proportional to 91,887.66, 126,809.79 and 51,599.34

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Solution

The fourth proportional to 91,887.66, 126,809.79 and 51,599.34 is: 71,209.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,887.66 : 126,809.79 = 51,599.34 : x
  2. Step 2: Convert to fraction form
    91,887.66/126,809.79 = 51,599.34/x
  3. Step 3: Cross multiply
    91,887.66x = 126,809.79 × 51,599.34
  4. Step 4: Simplify right side
    91,887.66x = 6,543,301,469.54
  5. Step 5: Solve for x
    x = 6,543,301,469.54/91,887.66
  6. Step 6: Final answer
    x = 71,209.80

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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.