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Finding the Fourth Proportional to 75,218.83, 112,845.71 and 21,912.07

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Solution

The fourth proportional to 75,218.83, 112,845.71 and 21,912.07 is: 32,873.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,218.83 : 112,845.71 = 21,912.07 : x
  2. Step 2: Convert to fraction form
    75,218.83/112,845.71 = 21,912.07/x
  3. Step 3: Cross multiply
    75,218.83x = 112,845.71 × 21,912.07
  4. Step 4: Simplify right side
    75,218.83x = 2,472,682,957.72
  5. Step 5: Solve for x
    x = 2,472,682,957.72/75,218.83
  6. Step 6: Final answer
    x = 32,873.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.