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Finding the Fourth Proportional to 40,561.70, 55,978.25 and 29,855.57

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Solution

The fourth proportional to 40,561.70, 55,978.25 and 29,855.57 is: 41,202.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,561.70 : 55,978.25 = 29,855.57 : x
  2. Step 2: Convert to fraction form
    40,561.70/55,978.25 = 29,855.57/x
  3. Step 3: Cross multiply
    40,561.70x = 55,978.25 × 29,855.57
  4. Step 4: Simplify right side
    40,561.70x = 1,671,262,132.18
  5. Step 5: Solve for x
    x = 1,671,262,132.18/40,561.70
  6. Step 6: Final answer
    x = 41,202.97

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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.