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Finding the Fourth Proportional to 84,713.43, 127,081.89 and 28,569.63

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Solution

The fourth proportional to 84,713.43, 127,081.89 and 28,569.63 is: 42,858.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,713.43 : 127,081.89 = 28,569.63 : x
  2. Step 2: Convert to fraction form
    84,713.43/127,081.89 = 28,569.63/x
  3. Step 3: Cross multiply
    84,713.43x = 127,081.89 × 28,569.63
  4. Step 4: Simplify right side
    84,713.43x = 3,630,682,577.00
  5. Step 5: Solve for x
    x = 3,630,682,577.00/84,713.43
  6. Step 6: Final answer
    x = 42,858.41

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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.