Home / 272,021.60-408,031.80-72,342.02

Finding the Fourth Proportional to 272,021.60, 408,031.80 and 72,342.02

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Solution

The fourth proportional to 272,021.60, 408,031.80 and 72,342.02 is: 108,512.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,021.60 : 408,031.80 = 72,342.02 : x
  2. Step 2: Convert to fraction form
    272,021.60/408,031.80 = 72,342.02/x
  3. Step 3: Cross multiply
    272,021.60x = 408,031.80 × 72,342.02
  4. Step 4: Simplify right side
    272,021.60x = 29,517,844,636.24
  5. Step 5: Solve for x
    x = 29,517,844,636.24/272,021.60
  6. Step 6: Final answer
    x = 108,512.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.