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Finding the Fourth Proportional to 84,709.44, 127,075.84 and 28,565.58

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Solution

The fourth proportional to 84,709.44, 127,075.84 and 28,565.58 is: 42,852.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,709.44 : 127,075.84 = 28,565.58 : x
  2. Step 2: Convert to fraction form
    84,709.44/127,075.84 = 28,565.58/x
  3. Step 3: Cross multiply
    84,709.44x = 127,075.84 × 28,565.58
  4. Step 4: Simplify right side
    84,709.44x = 3,629,995,073.59
  5. Step 5: Solve for x
    x = 3,629,995,073.59/84,709.44
  6. Step 6: Final answer
    x = 42,852.31

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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.