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Finding the Fourth Proportional to 84,425.71, 126,645.22 and 28,266.06

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Solution

The fourth proportional to 84,425.71, 126,645.22 and 28,266.06 is: 42,401.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,425.71 : 126,645.22 = 28,266.06 : x
  2. Step 2: Convert to fraction form
    84,425.71/126,645.22 = 28,266.06/x
  3. Step 3: Cross multiply
    84,425.71x = 126,645.22 × 28,266.06
  4. Step 4: Simplify right side
    84,425.71x = 3,579,761,185.11
  5. Step 5: Solve for x
    x = 3,579,761,185.11/84,425.71
  6. Step 6: Final answer
    x = 42,401.31

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1.5x scale

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.