Home / 91,805.09-126,688.88-51,517.81

Finding the Fourth Proportional to 91,805.09, 126,688.88 and 51,517.81

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Solution

The fourth proportional to 91,805.09, 126,688.88 and 51,517.81 is: 71,093.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,805.09 : 126,688.88 = 51,517.81 : x
  2. Step 2: Convert to fraction form
    91,805.09/126,688.88 = 51,517.81/x
  3. Step 3: Cross multiply
    91,805.09x = 126,688.88 × 51,517.81
  4. Step 4: Simplify right side
    91,805.09x = 6,526,733,936.11
  5. Step 5: Solve for x
    x = 6,526,733,936.11/91,805.09
  6. Step 6: Final answer
    x = 71,093.38

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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.