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Finding the Fourth Proportional to 56,972.97, 85,458.51 and 21,920.22

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Solution

The fourth proportional to 56,972.97, 85,458.51 and 21,920.22 is: 32,879.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,972.97 : 85,458.51 = 21,920.22 : x
  2. Step 2: Convert to fraction form
    56,972.97/85,458.51 = 21,920.22/x
  3. Step 3: Cross multiply
    56,972.97x = 85,458.51 × 21,920.22
  4. Step 4: Simplify right side
    56,972.97x = 1,873,269,340.07
  5. Step 5: Solve for x
    x = 1,873,269,340.07/56,972.97
  6. Step 6: Final answer
    x = 32,879.97

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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.