Home / 85,508.96-118,035.36-76,540.64

Finding the Fourth Proportional to 85,508.96, 118,035.36 and 76,540.64

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Solution

The fourth proportional to 85,508.96, 118,035.36 and 76,540.64 is: 105,655.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,508.96 : 118,035.36 = 76,540.64 : x
  2. Step 2: Convert to fraction form
    85,508.96/118,035.36 = 76,540.64/x
  3. Step 3: Cross multiply
    85,508.96x = 118,035.36 × 76,540.64
  4. Step 4: Simplify right side
    85,508.96x = 9,034,501,997.03
  5. Step 5: Solve for x
    x = 9,034,501,997.03/85,508.96
  6. Step 6: Final answer
    x = 105,655.62

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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.