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Finding the Fourth Proportional to 85,347.25, 127,986.65 and 35,393.41

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Solution

The fourth proportional to 85,347.25, 127,986.65 and 35,393.41 is: 53,075.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,347.25 : 127,986.65 = 35,393.41 : x
  2. Step 2: Convert to fraction form
    85,347.25/127,986.65 = 35,393.41/x
  3. Step 3: Cross multiply
    85,347.25x = 127,986.65 × 35,393.41
  4. Step 4: Simplify right side
    85,347.25x = 4,529,883,801.01
  5. Step 5: Solve for x
    x = 4,529,883,801.01/85,347.25
  6. Step 6: Final answer
    x = 53,075.92

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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.