Home / 65,742.56-90,800.16-47,917.20

Finding the Fourth Proportional to 65,742.56, 90,800.16 and 47,917.20

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Solution

The fourth proportional to 65,742.56, 90,800.16 and 47,917.20 is: 66,180.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,742.56 : 90,800.16 = 47,917.20 : x
  2. Step 2: Convert to fraction form
    65,742.56/90,800.16 = 47,917.20/x
  3. Step 3: Cross multiply
    65,742.56x = 90,800.16 × 47,917.20
  4. Step 4: Simplify right side
    65,742.56x = 4,350,889,426.75
  5. Step 5: Solve for x
    x = 4,350,889,426.75/65,742.56
  6. Step 6: Final answer
    x = 66,180.71

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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.