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Finding the Fourth Proportional to 84,993.17, 127,494.29 and 21,813.83

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Solution

The fourth proportional to 84,993.17, 127,494.29 and 21,813.83 is: 32,721.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,993.17 : 127,494.29 = 21,813.83 : x
  2. Step 2: Convert to fraction form
    84,993.17/127,494.29 = 21,813.83/x
  3. Step 3: Cross multiply
    84,993.17x = 127,494.29 × 21,813.83
  4. Step 4: Simplify right side
    84,993.17x = 2,781,139,141.30
  5. Step 5: Solve for x
    x = 2,781,139,141.30/84,993.17
  6. Step 6: Final answer
    x = 32,721.92

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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.