Home / 87,865.80-121,256.84-50,143.56

Finding the Fourth Proportional to 87,865.80, 121,256.84 and 50,143.56

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Solution

The fourth proportional to 87,865.80, 121,256.84 and 50,143.56 is: 69,199.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,865.80 : 121,256.84 = 50,143.56 : x
  2. Step 2: Convert to fraction form
    87,865.80/121,256.84 = 50,143.56/x
  3. Step 3: Cross multiply
    87,865.80x = 121,256.84 × 50,143.56
  4. Step 4: Simplify right side
    87,865.80x = 6,080,249,631.95
  5. Step 5: Solve for x
    x = 6,080,249,631.95/87,865.80
  6. Step 6: Final answer
    x = 69,199.27

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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.