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Finding the Fourth Proportional to 91,769.71, 126,642.49 and 51,483.50

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Solution

The fourth proportional to 91,769.71, 126,642.49 and 51,483.50 is: 71,047.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,769.71 : 126,642.49 = 51,483.50 : x
  2. Step 2: Convert to fraction form
    91,769.71/126,642.49 = 51,483.50/x
  3. Step 3: Cross multiply
    91,769.71x = 126,642.49 × 51,483.50
  4. Step 4: Simplify right side
    91,769.71x = 6,519,998,346.90
  5. Step 5: Solve for x
    x = 6,519,998,346.90/91,769.71
  6. Step 6: Final answer
    x = 71,047.39

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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.