Home / 64,872.35-89,508.57-39,378.09

Finding the Fourth Proportional to 64,872.35, 89,508.57 and 39,378.09

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Solution

The fourth proportional to 64,872.35, 89,508.57 and 39,378.09 is: 54,332.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,872.35 : 89,508.57 = 39,378.09 : x
  2. Step 2: Convert to fraction form
    64,872.35/89,508.57 = 39,378.09/x
  3. Step 3: Cross multiply
    64,872.35x = 89,508.57 × 39,378.09
  4. Step 4: Simplify right side
    64,872.35x = 3,524,676,525.23
  5. Step 5: Solve for x
    x = 3,524,676,525.23/64,872.35
  6. Step 6: Final answer
    x = 54,332.49

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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.