Home / 64,640.68-89,141.45-43,131.30

Finding the Fourth Proportional to 64,640.68, 89,141.45 and 43,131.30

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Solution

The fourth proportional to 64,640.68, 89,141.45 and 43,131.30 is: 59,479.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,640.68 : 89,141.45 = 43,131.30 : x
  2. Step 2: Convert to fraction form
    64,640.68/89,141.45 = 43,131.30/x
  3. Step 3: Cross multiply
    64,640.68x = 89,141.45 × 43,131.30
  4. Step 4: Simplify right side
    64,640.68x = 3,844,786,618.79
  5. Step 5: Solve for x
    x = 3,844,786,618.79/64,640.68
  6. Step 6: Final answer
    x = 59,479.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.