Home / 87,973.21-121,240.22-62,480.69

Finding the Fourth Proportional to 87,973.21, 121,240.22 and 62,480.69

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Solution

The fourth proportional to 87,973.21, 121,240.22 and 62,480.69 is: 86,107.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,973.21 : 121,240.22 = 62,480.69 : x
  2. Step 2: Convert to fraction form
    87,973.21/121,240.22 = 62,480.69/x
  3. Step 3: Cross multiply
    87,973.21x = 121,240.22 × 62,480.69
  4. Step 4: Simplify right side
    87,973.21x = 7,575,172,601.35
  5. Step 5: Solve for x
    x = 7,575,172,601.35/87,973.21
  6. Step 6: Final answer
    x = 86,107.72

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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.