Home / 57,279.52-78,998.88-40,339.96

Finding the Fourth Proportional to 57,279.52, 78,998.88 and 40,339.96

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Solution

The fourth proportional to 57,279.52, 78,998.88 and 40,339.96 is: 55,636.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,279.52 : 78,998.88 = 40,339.96 : x
  2. Step 2: Convert to fraction form
    57,279.52/78,998.88 = 40,339.96/x
  3. Step 3: Cross multiply
    57,279.52x = 78,998.88 × 40,339.96
  4. Step 4: Simplify right side
    57,279.52x = 3,186,811,659.24
  5. Step 5: Solve for x
    x = 3,186,811,659.24/57,279.52
  6. Step 6: Final answer
    x = 55,636.14

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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.