Home / 84,313.05-126,531.95-39,939.90

Finding the Fourth Proportional to 84,313.05, 126,531.95 and 39,939.90

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Solution

The fourth proportional to 84,313.05, 126,531.95 and 39,939.90 is: 59,939.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,313.05 : 126,531.95 = 39,939.90 : x
  2. Step 2: Convert to fraction form
    84,313.05/126,531.95 = 39,939.90/x
  3. Step 3: Cross multiply
    84,313.05x = 126,531.95 × 39,939.90
  4. Step 4: Simplify right side
    84,313.05x = 5,053,673,230.11
  5. Step 5: Solve for x
    x = 5,053,673,230.11/84,313.05
  6. Step 6: Final answer
    x = 59,939.40

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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.