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Finding the Fourth Proportional to 91,907.81, 126,823.00 and 51,626

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Solution

The fourth proportional to 91,907.81, 126,823.00 and 51,626 is: 71,238.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,907.81 : 126,823.00 = 51,626 : x
  2. Step 2: Convert to fraction form
    91,907.81/126,823.00 = 51,626/x
  3. Step 3: Cross multiply
    91,907.81x = 126,823.00 × 51,626
  4. Step 4: Simplify right side
    91,907.81x = 6,547,363,939.87
  5. Step 5: Solve for x
    x = 6,547,363,939.87/91,907.81
  6. Step 6: Final answer
    x = 71,238.38

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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.