Home / 74,475.92-102,776.04-55,440.81

Finding the Fourth Proportional to 74,475.92, 102,776.04 and 55,440.81

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Solution

The fourth proportional to 74,475.92, 102,776.04 and 55,440.81 is: 76,507.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,475.92 : 102,776.04 = 55,440.81 : x
  2. Step 2: Convert to fraction form
    74,475.92/102,776.04 = 55,440.81/x
  3. Step 3: Cross multiply
    74,475.92x = 102,776.04 × 55,440.81
  4. Step 4: Simplify right side
    74,475.92x = 5,697,986,906.19
  5. Step 5: Solve for x
    x = 5,697,986,906.19/74,475.92
  6. Step 6: Final answer
    x = 76,507.78

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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.