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Finding the Fourth Proportional to 72,093.86, 107,989.99 and 57,977.45

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Solution

The fourth proportional to 72,093.86, 107,989.99 and 57,977.45 is: 86,844.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,093.86 : 107,989.99 = 57,977.45 : x
  2. Step 2: Convert to fraction form
    72,093.86/107,989.99 = 57,977.45/x
  3. Step 3: Cross multiply
    72,093.86x = 107,989.99 × 57,977.45
  4. Step 4: Simplify right side
    72,093.86x = 6,260,984,245.73
  5. Step 5: Solve for x
    x = 6,260,984,245.73/72,093.86
  6. Step 6: Final answer
    x = 86,844.90

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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.