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Finding the Fourth Proportional to 87,302.75, 120,477.81 and 47,558.75

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Solution

The fourth proportional to 87,302.75, 120,477.81 and 47,558.75 is: 65,631.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,302.75 : 120,477.81 = 47,558.75 : x
  2. Step 2: Convert to fraction form
    87,302.75/120,477.81 = 47,558.75/x
  3. Step 3: Cross multiply
    87,302.75x = 120,477.81 × 47,558.75
  4. Step 4: Simplify right side
    87,302.75x = 5,729,774,046.34
  5. Step 5: Solve for x
    x = 5,729,774,046.34/87,302.75
  6. Step 6: Final answer
    x = 65,631.08

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.