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Finding the Fourth Proportional to 74,439, 102,773.34 and 51,769.80

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Solution

The fourth proportional to 74,439, 102,773.34 and 51,769.80 is: 71,475.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,439 : 102,773.34 = 51,769.80 : x
  2. Step 2: Convert to fraction form
    74,439/102,773.34 = 51,769.80/x
  3. Step 3: Cross multiply
    74,439x = 102,773.34 × 51,769.80
  4. Step 4: Simplify right side
    74,439x = 5,320,555,257.13
  5. Step 5: Solve for x
    x = 5,320,555,257.13/74,439
  6. Step 6: Final answer
    x = 71,475.37

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1.5x scale

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.