Home / 43,685.69-65,528.60-18,723.78

Finding the Fourth Proportional to 43,685.69, 65,528.60 and 18,723.78

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Solution

The fourth proportional to 43,685.69, 65,528.60 and 18,723.78 is: 28,085.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,685.69 : 65,528.60 = 18,723.78 : x
  2. Step 2: Convert to fraction form
    43,685.69/65,528.60 = 18,723.78/x
  3. Step 3: Cross multiply
    43,685.69x = 65,528.60 × 18,723.78
  4. Step 4: Simplify right side
    43,685.69x = 1,226,942,996.49
  5. Step 5: Solve for x
    x = 1,226,942,996.49/43,685.69
  6. Step 6: Final answer
    x = 28,085.70

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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.