Home / 87,529.52-120,719.40-55,643.60

Finding the Fourth Proportional to 87,529.52, 120,719.40 and 55,643.60

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Solution

The fourth proportional to 87,529.52, 120,719.40 and 55,643.60 is: 76,742.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,529.52 : 120,719.40 = 55,643.60 : x
  2. Step 2: Convert to fraction form
    87,529.52/120,719.40 = 55,643.60/x
  3. Step 3: Cross multiply
    87,529.52x = 120,719.40 × 55,643.60
  4. Step 4: Simplify right side
    87,529.52x = 6,717,262,005.84
  5. Step 5: Solve for x
    x = 6,717,262,005.84/87,529.52
  6. Step 6: Final answer
    x = 76,742.82

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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.