Home / 84,427.34-126,578.12-51,139.37

Finding the Fourth Proportional to 84,427.34, 126,578.12 and 51,139.37

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Solution

The fourth proportional to 84,427.34, 126,578.12 and 51,139.37 is: 76,670.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,427.34 : 126,578.12 = 51,139.37 : x
  2. Step 2: Convert to fraction form
    84,427.34/126,578.12 = 51,139.37/x
  3. Step 3: Cross multiply
    84,427.34x = 126,578.12 × 51,139.37
  4. Step 4: Simplify right side
    84,427.34x = 6,473,124,424.00
  5. Step 5: Solve for x
    x = 6,473,124,424.00/84,427.34
  6. Step 6: Final answer
    x = 76,670.96

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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.