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Finding the Fourth Proportional to 76,615.47, 114,992.73 and 39,201.39

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Solution

The fourth proportional to 76,615.47, 114,992.73 and 39,201.39 is: 58,837.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,615.47 : 114,992.73 = 39,201.39 : x
  2. Step 2: Convert to fraction form
    76,615.47/114,992.73 = 39,201.39/x
  3. Step 3: Cross multiply
    76,615.47x = 114,992.73 × 39,201.39
  4. Step 4: Simplify right side
    76,615.47x = 4,507,874,855.89
  5. Step 5: Solve for x
    x = 4,507,874,855.89/76,615.47
  6. Step 6: Final answer
    x = 58,837.66

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1.5x scale

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.