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Finding the Fourth Proportional to 55,057.80, 75,979.80 and 29,907.30

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Solution

The fourth proportional to 55,057.80, 75,979.80 and 29,907.30 is: 41,272.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,057.80 : 75,979.80 = 29,907.30 : x
  2. Step 2: Convert to fraction form
    55,057.80/75,979.80 = 29,907.30/x
  3. Step 3: Cross multiply
    55,057.80x = 75,979.80 × 29,907.30
  4. Step 4: Simplify right side
    55,057.80x = 2,272,350,672.54
  5. Step 5: Solve for x
    x = 2,272,350,672.54/55,057.80
  6. Step 6: Final answer
    x = 41,272.09

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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.