Home / 84,123.99-126,168.15-31,537.35

Finding the Fourth Proportional to 84,123.99, 126,168.15 and 31,537.35

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Solution

The fourth proportional to 84,123.99, 126,168.15 and 31,537.35 is: 47,299.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,123.99 : 126,168.15 = 31,537.35 : x
  2. Step 2: Convert to fraction form
    84,123.99/126,168.15 = 31,537.35/x
  3. Step 3: Cross multiply
    84,123.99x = 126,168.15 × 31,537.35
  4. Step 4: Simplify right side
    84,123.99x = 3,979,009,105.40
  5. Step 5: Solve for x
    x = 3,979,009,105.40/84,123.99
  6. Step 6: Final answer
    x = 47,299.34

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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.