Home / 72,023.20-107,996.40-30,423.20

Finding the Fourth Proportional to 72,023.20, 107,996.40 and 30,423.20

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Solution

The fourth proportional to 72,023.20, 107,996.40 and 30,423.20 is: 45,618.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,023.20 : 107,996.40 = 30,423.20 : x
  2. Step 2: Convert to fraction form
    72,023.20/107,996.40 = 30,423.20/x
  3. Step 3: Cross multiply
    72,023.20x = 107,996.40 × 30,423.20
  4. Step 4: Simplify right side
    72,023.20x = 3,285,596,076.48
  5. Step 5: Solve for x
    x = 3,285,596,076.48/72,023.20
  6. Step 6: Final answer
    x = 45,618.58

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1.5x scale

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.