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Finding the Fourth Proportional to 42,504.40, 64,074.94 and 39,649.96

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Solution

The fourth proportional to 42,504.40, 64,074.94 and 39,649.96 is: 59,771.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,504.40 : 64,074.94 = 39,649.96 : x
  2. Step 2: Convert to fraction form
    42,504.40/64,074.94 = 39,649.96/x
  3. Step 3: Cross multiply
    42,504.40x = 64,074.94 × 39,649.96
  4. Step 4: Simplify right side
    42,504.40x = 2,540,568,808.00
  5. Step 5: Solve for x
    x = 2,540,568,808.00/42,504.40
  6. Step 6: Final answer
    x = 59,771.90

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.