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Finding the Fourth Proportional to 44,540.40, 66,733.80 and 21,116.40

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Solution

The fourth proportional to 44,540.40, 66,733.80 and 21,116.40 is: 31,638.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    44,540.40 : 66,733.80 = 21,116.40 : x
  2. Step 2: Convert to fraction form
    44,540.40/66,733.80 = 21,116.40/x
  3. Step 3: Cross multiply
    44,540.40x = 66,733.80 × 21,116.40
  4. Step 4: Simplify right side
    44,540.40x = 1,409,177,614.32
  5. Step 5: Solve for x
    x = 1,409,177,614.32/44,540.40
  6. Step 6: Final answer
    x = 31,638.19

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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.