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Finding the Fourth Proportional to 84,499.66, 126,762 and 28,326.34

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Solution

The fourth proportional to 84,499.66, 126,762 and 28,326.34 is: 42,493.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,499.66 : 126,762 = 28,326.34 : x
  2. Step 2: Convert to fraction form
    84,499.66/126,762 = 28,326.34/x
  3. Step 3: Cross multiply
    84,499.66x = 126,762 × 28,326.34
  4. Step 4: Simplify right side
    84,499.66x = 3,590,703,511.08
  5. Step 5: Solve for x
    x = 3,590,703,511.08/84,499.66
  6. Step 6: Final answer
    x = 42,493.70

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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.