Home / 87,987.64-121,429.38-50,261.08

Finding the Fourth Proportional to 87,987.64, 121,429.38 and 50,261.08

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Solution

The fourth proportional to 87,987.64, 121,429.38 and 50,261.08 is: 69,363.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,987.64 : 121,429.38 = 50,261.08 : x
  2. Step 2: Convert to fraction form
    87,987.64/121,429.38 = 50,261.08/x
  3. Step 3: Cross multiply
    87,987.64x = 121,429.38 × 50,261.08
  4. Step 4: Simplify right side
    87,987.64x = 6,103,171,782.53
  5. Step 5: Solve for x
    x = 6,103,171,782.53/87,987.64
  6. Step 6: Final answer
    x = 69,363.97

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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.