Home / 74,138.17-102,310.73-40,146.93

Finding the Fourth Proportional to 74,138.17, 102,310.73 and 40,146.93

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Solution

The fourth proportional to 74,138.17, 102,310.73 and 40,146.93 is: 55,402.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,138.17 : 102,310.73 = 40,146.93 : x
  2. Step 2: Convert to fraction form
    74,138.17/102,310.73 = 40,146.93/x
  3. Step 3: Cross multiply
    74,138.17x = 102,310.73 × 40,146.93
  4. Step 4: Simplify right side
    74,138.17x = 4,107,461,715.56
  5. Step 5: Solve for x
    x = 4,107,461,715.56/74,138.17
  6. Step 6: Final answer
    x = 55,402.79

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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.