Home / 87,891.25-121,289.87-47,605.00

Finding the Fourth Proportional to 87,891.25, 121,289.87 and 47,605.00

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Solution

The fourth proportional to 87,891.25, 121,289.87 and 47,605.00 is: 65,694.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,891.25 : 121,289.87 = 47,605.00 : x
  2. Step 2: Convert to fraction form
    87,891.25/121,289.87 = 47,605.00/x
  3. Step 3: Cross multiply
    87,891.25x = 121,289.87 × 47,605.00
  4. Step 4: Simplify right side
    87,891.25x = 5,774,003,654.90
  5. Step 5: Solve for x
    x = 5,774,003,654.90/87,891.25
  6. Step 6: Final answer
    x = 65,694.87

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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.