Home / 84,427.72-126,578.70-51,139.76

Finding the Fourth Proportional to 84,427.72, 126,578.70 and 51,139.76

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Solution

The fourth proportional to 84,427.72, 126,578.70 and 51,139.76 is: 76,671.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,427.72 : 126,578.70 = 51,139.76 : x
  2. Step 2: Convert to fraction form
    84,427.72/126,578.70 = 51,139.76/x
  3. Step 3: Cross multiply
    84,427.72x = 126,578.70 × 51,139.76
  4. Step 4: Simplify right side
    84,427.72x = 6,473,203,706.22
  5. Step 5: Solve for x
    x = 6,473,203,706.22/84,427.72
  6. Step 6: Final answer
    x = 76,671.55

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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.