Home / 87,907.40-121,309.44-49,668.56

Finding the Fourth Proportional to 87,907.40, 121,309.44 and 49,668.56

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Solution

The fourth proportional to 87,907.40, 121,309.44 and 49,668.56 is: 68,541.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,907.40 : 121,309.44 = 49,668.56 : x
  2. Step 2: Convert to fraction form
    87,907.40/121,309.44 = 49,668.56/x
  3. Step 3: Cross multiply
    87,907.40x = 121,309.44 × 49,668.56
  4. Step 4: Simplify right side
    87,907.40x = 6,025,265,199.21
  5. Step 5: Solve for x
    x = 6,025,265,199.21/87,907.40
  6. Step 6: Final answer
    x = 68,541.05

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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.