Home / 87,719.56-121,052.90-47,433.22

Finding the Fourth Proportional to 87,719.56, 121,052.90 and 47,433.22

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Solution

The fourth proportional to 87,719.56, 121,052.90 and 47,433.22 is: 65,457.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,719.56 : 121,052.90 = 47,433.22 : x
  2. Step 2: Convert to fraction form
    87,719.56/121,052.90 = 47,433.22/x
  3. Step 3: Cross multiply
    87,719.56x = 121,052.90 × 47,433.22
  4. Step 4: Simplify right side
    87,719.56x = 5,741,928,837.34
  5. Step 5: Solve for x
    x = 5,741,928,837.34/87,719.56
  6. Step 6: Final answer
    x = 65,457.79

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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.