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Finding the Fourth Proportional to 87,580.88, 120,735.64 and 62,386.64

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Solution

The fourth proportional to 87,580.88, 120,735.64 and 62,386.64 is: 86,003.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,580.88 : 120,735.64 = 62,386.64 : x
  2. Step 2: Convert to fraction form
    87,580.88/120,735.64 = 62,386.64/x
  3. Step 3: Cross multiply
    87,580.88x = 120,735.64 × 62,386.64
  4. Step 4: Simplify right side
    87,580.88x = 7,532,290,907.85
  5. Step 5: Solve for x
    x = 7,532,290,907.85/87,580.88
  6. Step 6: Final answer
    x = 86,003.83

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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.