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Finding the Fourth Proportional to 69,472, 95,870.80 and 37,640.80

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Solution

The fourth proportional to 69,472, 95,870.80 and 37,640.80 is: 51,944.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,472 : 95,870.80 = 37,640.80 : x
  2. Step 2: Convert to fraction form
    69,472/95,870.80 = 37,640.80/x
  3. Step 3: Cross multiply
    69,472x = 95,870.80 × 37,640.80
  4. Step 4: Simplify right side
    69,472x = 3,608,653,608.64
  5. Step 5: Solve for x
    x = 3,608,653,608.64/69,472
  6. Step 6: Final answer
    x = 51,944.00

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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.