Home / 65,736.12-90,708.61-40,248.90

Finding the Fourth Proportional to 65,736.12, 90,708.61 and 40,248.90

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Solution

The fourth proportional to 65,736.12, 90,708.61 and 40,248.90 is: 55,539.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,736.12 : 90,708.61 = 40,248.90 : x
  2. Step 2: Convert to fraction form
    65,736.12/90,708.61 = 40,248.90/x
  3. Step 3: Cross multiply
    65,736.12x = 90,708.61 × 40,248.90
  4. Step 4: Simplify right side
    65,736.12x = 3,650,921,773.03
  5. Step 5: Solve for x
    x = 3,650,921,773.03/65,736.12
  6. Step 6: Final answer
    x = 55,539.05

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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.