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Finding the Fourth Proportional to 74,440.88, 102,728.82 and 40,449.63

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Solution

The fourth proportional to 74,440.88, 102,728.82 and 40,449.63 is: 55,820.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,440.88 : 102,728.82 = 40,449.63 : x
  2. Step 2: Convert to fraction form
    74,440.88/102,728.82 = 40,449.63/x
  3. Step 3: Cross multiply
    74,440.88x = 102,728.82 × 40,449.63
  4. Step 4: Simplify right side
    74,440.88x = 4,155,342,759.34
  5. Step 5: Solve for x
    x = 4,155,342,759.34/74,440.88
  6. Step 6: Final answer
    x = 55,820.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.