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Finding the Fourth Proportional to 84,788.44, 127,185.37 and 42,645.52

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Solution

The fourth proportional to 84,788.44, 127,185.37 and 42,645.52 is: 63,969.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,788.44 : 127,185.37 = 42,645.52 : x
  2. Step 2: Convert to fraction form
    84,788.44/127,185.37 = 42,645.52/x
  3. Step 3: Cross multiply
    84,788.44x = 127,185.37 × 42,645.52
  4. Step 4: Simplify right side
    84,788.44x = 5,423,886,240.04
  5. Step 5: Solve for x
    x = 5,423,886,240.04/84,788.44
  6. Step 6: Final answer
    x = 63,969.64

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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.