Home / 87,651.24-121,017.06-51,852.72

Finding the Fourth Proportional to 87,651.24, 121,017.06 and 51,852.72

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Solution

The fourth proportional to 87,651.24, 121,017.06 and 51,852.72 is: 71,591.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,651.24 : 121,017.06 = 51,852.72 : x
  2. Step 2: Convert to fraction form
    87,651.24/121,017.06 = 51,852.72/x
  3. Step 3: Cross multiply
    87,651.24x = 121,017.06 × 51,852.72
  4. Step 4: Simplify right side
    87,651.24x = 6,275,063,727.40
  5. Step 5: Solve for x
    x = 6,275,063,727.40/87,651.24
  6. Step 6: Final answer
    x = 71,591.27

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1.5x scale

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.