Home / 87,998.90-121,429.49-54,008.82

Finding the Fourth Proportional to 87,998.90, 121,429.49 and 54,008.82

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Solution

The fourth proportional to 87,998.90, 121,429.49 and 54,008.82 is: 74,526.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,998.90 : 121,429.49 = 54,008.82 : x
  2. Step 2: Convert to fraction form
    87,998.90/121,429.49 = 54,008.82/x
  3. Step 3: Cross multiply
    87,998.90x = 121,429.49 × 54,008.82
  4. Step 4: Simplify right side
    87,998.90x = 6,558,263,198.06
  5. Step 5: Solve for x
    x = 6,558,263,198.06/87,998.90
  6. Step 6: Final answer
    x = 74,526.65

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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.