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Finding the Fourth Proportional to 43,958.70, 65,998.80 and 28,260.90

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Solution

The fourth proportional to 43,958.70, 65,998.80 and 28,260.90 is: 42,430.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,958.70 : 65,998.80 = 28,260.90 : x
  2. Step 2: Convert to fraction form
    43,958.70/65,998.80 = 28,260.90/x
  3. Step 3: Cross multiply
    43,958.70x = 65,998.80 × 28,260.90
  4. Step 4: Simplify right side
    43,958.70x = 1,865,185,486.92
  5. Step 5: Solve for x
    x = 1,865,185,486.92/43,958.70
  6. Step 6: Final answer
    x = 42,430.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.