Home / 64,000.20-96,000.30-40,729.80

Finding the Fourth Proportional to 64,000.20, 96,000.30 and 40,729.80

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Solution

The fourth proportional to 64,000.20, 96,000.30 and 40,729.80 is: 61,094.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,000.20 : 96,000.30 = 40,729.80 : x
  2. Step 2: Convert to fraction form
    64,000.20/96,000.30 = 40,729.80/x
  3. Step 3: Cross multiply
    64,000.20x = 96,000.30 × 40,729.80
  4. Step 4: Simplify right side
    64,000.20x = 3,910,073,018.94
  5. Step 5: Solve for x
    x = 3,910,073,018.94/64,000.20
  6. Step 6: Final answer
    x = 61,094.70

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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.