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Finding the Fourth Proportional to 64,029.80, 95,987.10 and 40,644.20

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Solution

The fourth proportional to 64,029.80, 95,987.10 and 40,644.20 is: 60,929.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,029.80 : 95,987.10 = 40,644.20 : x
  2. Step 2: Convert to fraction form
    64,029.80/95,987.10 = 40,644.20/x
  3. Step 3: Cross multiply
    64,029.80x = 95,987.10 × 40,644.20
  4. Step 4: Simplify right side
    64,029.80x = 3,901,318,889.82
  5. Step 5: Solve for x
    x = 3,901,318,889.82/64,029.80
  6. Step 6: Final answer
    x = 60,929.74

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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.