Home / 77,047.45-115,568.74-45,672.51

Finding the Fourth Proportional to 77,047.45, 115,568.74 and 45,672.51

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Solution

The fourth proportional to 77,047.45, 115,568.74 and 45,672.51 is: 68,507.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,047.45 : 115,568.74 = 45,672.51 : x
  2. Step 2: Convert to fraction form
    77,047.45/115,568.74 = 45,672.51/x
  3. Step 3: Cross multiply
    77,047.45x = 115,568.74 × 45,672.51
  4. Step 4: Simplify right side
    77,047.45x = 5,278,314,433.34
  5. Step 5: Solve for x
    x = 5,278,314,433.34/77,047.45
  6. Step 6: Final answer
    x = 68,507.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.