Home / 85,434.22-128,063.85-43,236.10

Finding the Fourth Proportional to 85,434.22, 128,063.85 and 43,236.10

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Solution

The fourth proportional to 85,434.22, 128,063.85 and 43,236.10 is: 64,809.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,434.22 : 128,063.85 = 43,236.10 : x
  2. Step 2: Convert to fraction form
    85,434.22/128,063.85 = 43,236.10/x
  3. Step 3: Cross multiply
    85,434.22x = 128,063.85 × 43,236.10
  4. Step 4: Simplify right side
    85,434.22x = 5,536,981,424.99
  5. Step 5: Solve for x
    x = 5,536,981,424.99/85,434.22
  6. Step 6: Final answer
    x = 64,809.88

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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.