Home / 74,130.89-102,300.82-40,139.44

Finding the Fourth Proportional to 74,130.89, 102,300.82 and 40,139.44

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Solution

The fourth proportional to 74,130.89, 102,300.82 and 40,139.44 is: 55,392.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,130.89 : 102,300.82 = 40,139.44 : x
  2. Step 2: Convert to fraction form
    74,130.89/102,300.82 = 40,139.44/x
  3. Step 3: Cross multiply
    74,130.89x = 102,300.82 × 40,139.44
  4. Step 4: Simplify right side
    74,130.89x = 4,106,297,270.24
  5. Step 5: Solve for x
    x = 4,106,297,270.24/74,130.89
  6. Step 6: Final answer
    x = 55,392.53

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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.