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Finding the Fourth Proportional to 76,507.68, 114,548.67 and 38,986.86

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Solution

The fourth proportional to 76,507.68, 114,548.67 and 38,986.86 is: 58,371.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,507.68 : 114,548.67 = 38,986.86 : x
  2. Step 2: Convert to fraction form
    76,507.68/114,548.67 = 38,986.86/x
  3. Step 3: Cross multiply
    76,507.68x = 114,548.67 × 38,986.86
  4. Step 4: Simplify right side
    76,507.68x = 4,465,892,960.48
  5. Step 5: Solve for x
    x = 4,465,892,960.48/76,507.68
  6. Step 6: Final answer
    x = 58,371.83

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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.