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Finding the Fourth Proportional to 77,362.90, 115,847.40 and 50,987.68

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Solution

The fourth proportional to 77,362.90, 115,847.40 and 50,987.68 is: 76,351.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,362.90 : 115,847.40 = 50,987.68 : x
  2. Step 2: Convert to fraction form
    77,362.90/115,847.40 = 50,987.68/x
  3. Step 3: Cross multiply
    77,362.90x = 115,847.40 × 50,987.68
  4. Step 4: Simplify right side
    77,362.90x = 5,906,790,160.03
  5. Step 5: Solve for x
    x = 5,906,790,160.03/77,362.90
  6. Step 6: Final answer
    x = 76,351.72

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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.