Home / 92,561.28-138,739.20-45,847.68

Finding the Fourth Proportional to 92,561.28, 138,739.20 and 45,847.68

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Solution

The fourth proportional to 92,561.28, 138,739.20 and 45,847.68 is: 68,720.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,561.28 : 138,739.20 = 45,847.68 : x
  2. Step 2: Convert to fraction form
    92,561.28/138,739.20 = 45,847.68/x
  3. Step 3: Cross multiply
    92,561.28x = 138,739.20 × 45,847.68
  4. Step 4: Simplify right side
    92,561.28x = 6,360,870,445.06
  5. Step 5: Solve for x
    x = 6,360,870,445.06/92,561.28
  6. Step 6: Final answer
    x = 68,720.64

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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.