Home / 76,691.20-105,833.64-43,157.20

Finding the Fourth Proportional to 76,691.20, 105,833.64 and 43,157.20

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Solution

The fourth proportional to 76,691.20, 105,833.64 and 43,157.20 is: 59,556.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,691.20 : 105,833.64 = 43,157.20 : x
  2. Step 2: Convert to fraction form
    76,691.20/105,833.64 = 43,157.20/x
  3. Step 3: Cross multiply
    76,691.20x = 105,833.64 × 43,157.20
  4. Step 4: Simplify right side
    76,691.20x = 4,567,483,568.21
  5. Step 5: Solve for x
    x = 4,567,483,568.21/76,691.20
  6. Step 6: Final answer
    x = 59,556.81

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1.5x scale

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.