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Finding the Fourth Proportional to 84,882.98, 127,322.18 and 28,722.72

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Solution

The fourth proportional to 84,882.98, 127,322.18 and 28,722.72 is: 43,083.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,882.98 : 127,322.18 = 28,722.72 : x
  2. Step 2: Convert to fraction form
    84,882.98/127,322.18 = 28,722.72/x
  3. Step 3: Cross multiply
    84,882.98x = 127,322.18 × 28,722.72
  4. Step 4: Simplify right side
    84,882.98x = 3,657,039,325.93
  5. Step 5: Solve for x
    x = 3,657,039,325.93/84,882.98
  6. Step 6: Final answer
    x = 43,083.31

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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.