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Finding the Fourth Proportional to 91,769.27, 126,642.47 and 51,483.90

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Solution

The fourth proportional to 91,769.27, 126,642.47 and 51,483.90 is: 71,048.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,769.27 : 126,642.47 = 51,483.90 : x
  2. Step 2: Convert to fraction form
    91,769.27/126,642.47 = 51,483.90/x
  3. Step 3: Cross multiply
    91,769.27x = 126,642.47 × 51,483.90
  4. Step 4: Simplify right side
    91,769.27x = 6,520,048,003.81
  5. Step 5: Solve for x
    x = 6,520,048,003.81/91,769.27
  6. Step 6: Final answer
    x = 71,048.28

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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.