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Finding the Fourth Proportional to 91,807.82, 126,699.64 and 51,519.50

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Solution

The fourth proportional to 91,807.82, 126,699.64 and 51,519.50 is: 71,099.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,807.82 : 126,699.64 = 51,519.50 : x
  2. Step 2: Convert to fraction form
    91,807.82/126,699.64 = 51,519.50/x
  3. Step 3: Cross multiply
    91,807.82x = 126,699.64 × 51,519.50
  4. Step 4: Simplify right side
    91,807.82x = 6,527,502,102.98
  5. Step 5: Solve for x
    x = 6,527,502,102.98/91,807.82
  6. Step 6: Final answer
    x = 71,099.63

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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.