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Finding the Fourth Proportional to 84,008.07, 126,012.09 and 28,604.07

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Solution

The fourth proportional to 84,008.07, 126,012.09 and 28,604.07 is: 42,906.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,008.07 : 126,012.09 = 28,604.07 : x
  2. Step 2: Convert to fraction form
    84,008.07/126,012.09 = 28,604.07/x
  3. Step 3: Cross multiply
    84,008.07x = 126,012.09 × 28,604.07
  4. Step 4: Simplify right side
    84,008.07x = 3,604,458,643.21
  5. Step 5: Solve for x
    x = 3,604,458,643.21/84,008.07
  6. Step 6: Final answer
    x = 42,906.10

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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.