Home / 90,541.34-135,814.78-43,161.62

Finding the Fourth Proportional to 90,541.34, 135,814.78 and 43,161.62

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Solution

The fourth proportional to 90,541.34, 135,814.78 and 43,161.62 is: 64,743.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,541.34 : 135,814.78 = 43,161.62 : x
  2. Step 2: Convert to fraction form
    90,541.34/135,814.78 = 43,161.62/x
  3. Step 3: Cross multiply
    90,541.34x = 135,814.78 × 43,161.62
  4. Step 4: Simplify right side
    90,541.34x = 5,861,985,924.74
  5. Step 5: Solve for x
    x = 5,861,985,924.74/90,541.34
  6. Step 6: Final answer
    x = 64,743.75

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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.