Home / 87,378.36-120,595.95-53,406.56

Finding the Fourth Proportional to 87,378.36, 120,595.95 and 53,406.56

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Solution

The fourth proportional to 87,378.36, 120,595.95 and 53,406.56 is: 73,709.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,378.36 : 120,595.95 = 53,406.56 : x
  2. Step 2: Convert to fraction form
    87,378.36/120,595.95 = 53,406.56/x
  3. Step 3: Cross multiply
    87,378.36x = 120,595.95 × 53,406.56
  4. Step 4: Simplify right side
    87,378.36x = 6,440,614,236.45
  5. Step 5: Solve for x
    x = 6,440,614,236.45/87,378.36
  6. Step 6: Final answer
    x = 73,709.49

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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.