Home / 65,040-89,769.66-39,540.95

Finding the Fourth Proportional to 65,040, 89,769.66 and 39,540.95

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Solution

The fourth proportional to 65,040, 89,769.66 and 39,540.95 is: 54,575.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,040 : 89,769.66 = 39,540.95 : x
  2. Step 2: Convert to fraction form
    65,040/89,769.66 = 39,540.95/x
  3. Step 3: Cross multiply
    65,040x = 89,769.66 × 39,540.95
  4. Step 4: Simplify right side
    65,040x = 3,549,577,188.73
  5. Step 5: Solve for x
    x = 3,549,577,188.73/65,040
  6. Step 6: Final answer
    x = 54,575.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.