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Finding the Fourth Proportional to 84,907.53, 127,098.81 and 72,310.41

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Solution

The fourth proportional to 84,907.53, 127,098.81 and 72,310.41 is: 108,242.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,907.53 : 127,098.81 = 72,310.41 : x
  2. Step 2: Convert to fraction form
    84,907.53/127,098.81 = 72,310.41/x
  3. Step 3: Cross multiply
    84,907.53x = 127,098.81 × 72,310.41
  4. Step 4: Simplify right side
    84,907.53x = 9,190,567,061.61
  5. Step 5: Solve for x
    x = 9,190,567,061.61/84,907.53
  6. Step 6: Final answer
    x = 108,242.07

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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.