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Finding the Fourth Proportional to 83,644.64, 125,447.82 and 49,920.19

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Solution

The fourth proportional to 83,644.64, 125,447.82 and 49,920.19 is: 74,868.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,644.64 : 125,447.82 = 49,920.19 : x
  2. Step 2: Convert to fraction form
    83,644.64/125,447.82 = 49,920.19/x
  3. Step 3: Cross multiply
    83,644.64x = 125,447.82 × 49,920.19
  4. Step 4: Simplify right side
    83,644.64x = 6,262,379,009.49
  5. Step 5: Solve for x
    x = 6,262,379,009.49/83,644.64
  6. Step 6: Final answer
    x = 74,868.86

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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.