Home / 87,378.88-120,548.64-53,786.56

Finding the Fourth Proportional to 87,378.88, 120,548.64 and 53,786.56

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Solution

The fourth proportional to 87,378.88, 120,548.64 and 53,786.56 is: 74,204.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,378.88 : 120,548.64 = 53,786.56 : x
  2. Step 2: Convert to fraction form
    87,378.88/120,548.64 = 53,786.56/x
  3. Step 3: Cross multiply
    87,378.88x = 120,548.64 × 53,786.56
  4. Step 4: Simplify right side
    87,378.88x = 6,483,896,658.28
  5. Step 5: Solve for x
    x = 6,483,896,658.28/87,378.88
  6. Step 6: Final answer
    x = 74,204.39

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1.5x scale

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.