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Finding the Fourth Proportional to 77,906.59, 107,485.30 and 43,910.89

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Solution

The fourth proportional to 77,906.59, 107,485.30 and 43,910.89 is: 60,582.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,906.59 : 107,485.30 = 43,910.89 : x
  2. Step 2: Convert to fraction form
    77,906.59/107,485.30 = 43,910.89/x
  3. Step 3: Cross multiply
    77,906.59x = 107,485.30 × 43,910.89
  4. Step 4: Simplify right side
    77,906.59x = 4,719,775,184.92
  5. Step 5: Solve for x
    x = 4,719,775,184.92/77,906.59
  6. Step 6: Final answer
    x = 60,582.49

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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.