Home / 87,257.28-120,411.75-53,322.51

Finding the Fourth Proportional to 87,257.28, 120,411.75 and 53,322.51

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Solution

The fourth proportional to 87,257.28, 120,411.75 and 53,322.51 is: 73,583.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,257.28 : 120,411.75 = 53,322.51 : x
  2. Step 2: Convert to fraction form
    87,257.28/120,411.75 = 53,322.51/x
  3. Step 3: Cross multiply
    87,257.28x = 120,411.75 × 53,322.51
  4. Step 4: Simplify right side
    87,257.28x = 6,420,656,743.49
  5. Step 5: Solve for x
    x = 6,420,656,743.49/87,257.28
  6. Step 6: Final answer
    x = 73,583.05

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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.