Home / 84,029.40-126,039.60-31,434.48

Finding the Fourth Proportional to 84,029.40, 126,039.60 and 31,434.48

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Solution

The fourth proportional to 84,029.40, 126,039.60 and 31,434.48 is: 47,150.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,029.40 : 126,039.60 = 31,434.48 : x
  2. Step 2: Convert to fraction form
    84,029.40/126,039.60 = 31,434.48/x
  3. Step 3: Cross multiply
    84,029.40x = 126,039.60 × 31,434.48
  4. Step 4: Simplify right side
    84,029.40x = 3,961,989,285.41
  5. Step 5: Solve for x
    x = 3,961,989,285.41/84,029.40
  6. Step 6: Final answer
    x = 47,150.04

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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.