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Finding the Fourth Proportional to 84,661.12, 127,012.84 and 59,749.80

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Solution

The fourth proportional to 84,661.12, 127,012.84 and 59,749.80 is: 89,639.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,661.12 : 127,012.84 = 59,749.80 : x
  2. Step 2: Convert to fraction form
    84,661.12/127,012.84 = 59,749.80/x
  3. Step 3: Cross multiply
    84,661.12x = 127,012.84 × 59,749.80
  4. Step 4: Simplify right side
    84,661.12x = 7,588,991,787.43
  5. Step 5: Solve for x
    x = 7,588,991,787.43/84,661.12
  6. Step 6: Final answer
    x = 89,639.63

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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.