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Finding the Fourth Proportional to 43,751.80, 65,660.10 and 28,955.80

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Solution

The fourth proportional to 43,751.80, 65,660.10 and 28,955.80 is: 43,455.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,751.80 : 65,660.10 = 28,955.80 : x
  2. Step 2: Convert to fraction form
    43,751.80/65,660.10 = 28,955.80/x
  3. Step 3: Cross multiply
    43,751.80x = 65,660.10 × 28,955.80
  4. Step 4: Simplify right side
    43,751.80x = 1,901,240,723.58
  5. Step 5: Solve for x
    x = 1,901,240,723.58/43,751.80
  6. Step 6: Final answer
    x = 43,455.14

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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.