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Finding the Fourth Proportional to 64,006.60, 96,009.90 and 40,649.80

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Solution

The fourth proportional to 64,006.60, 96,009.90 and 40,649.80 is: 60,974.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,006.60 : 96,009.90 = 40,649.80 : x
  2. Step 2: Convert to fraction form
    64,006.60/96,009.90 = 40,649.80/x
  3. Step 3: Cross multiply
    64,006.60x = 96,009.90 × 40,649.80
  4. Step 4: Simplify right side
    64,006.60x = 3,902,783,233.02
  5. Step 5: Solve for x
    x = 3,902,783,233.02/64,006.60
  6. Step 6: Final answer
    x = 60,974.70

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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.