Home / 74,731.59-103,128.39-40,741.43

Finding the Fourth Proportional to 74,731.59, 103,128.39 and 40,741.43

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Solution

The fourth proportional to 74,731.59, 103,128.39 and 40,741.43 is: 56,222.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,731.59 : 103,128.39 = 40,741.43 : x
  2. Step 2: Convert to fraction form
    74,731.59/103,128.39 = 40,741.43/x
  3. Step 3: Cross multiply
    74,731.59x = 103,128.39 × 40,741.43
  4. Step 4: Simplify right side
    74,731.59x = 4,201,597,566.56
  5. Step 5: Solve for x
    x = 4,201,597,566.56/74,731.59
  6. Step 6: Final answer
    x = 56,222.51

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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.