Home / 74,411.05-102,687.16-40,419.56

Finding the Fourth Proportional to 74,411.05, 102,687.16 and 40,419.56

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Solution

The fourth proportional to 74,411.05, 102,687.16 and 40,419.56 is: 55,778.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,411.05 : 102,687.16 = 40,419.56 : x
  2. Step 2: Convert to fraction form
    74,411.05/102,687.16 = 40,419.56/x
  3. Step 3: Cross multiply
    74,411.05x = 102,687.16 × 40,419.56
  4. Step 4: Simplify right side
    74,411.05x = 4,150,569,848.06
  5. Step 5: Solve for x
    x = 4,150,569,848.06/74,411.05
  6. Step 6: Final answer
    x = 55,778.95

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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.