Home / 64,871.35-89,507.19-39,377.09

Finding the Fourth Proportional to 64,871.35, 89,507.19 and 39,377.09

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Solution

The fourth proportional to 64,871.35, 89,507.19 and 39,377.09 is: 54,331.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,871.35 : 89,507.19 = 39,377.09 : x
  2. Step 2: Convert to fraction form
    64,871.35/89,507.19 = 39,377.09/x
  3. Step 3: Cross multiply
    64,871.35x = 89,507.19 × 39,377.09
  4. Step 4: Simplify right side
    64,871.35x = 3,524,532,550.95
  5. Step 5: Solve for x
    x = 3,524,532,550.95/64,871.35
  6. Step 6: Final answer
    x = 54,331.11

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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.