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Finding the Fourth Proportional to 101,991.45, 152,934.39 and 45,783.16

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Solution

The fourth proportional to 101,991.45, 152,934.39 and 45,783.16 is: 68,651.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,991.45 : 152,934.39 = 45,783.16 : x
  2. Step 2: Convert to fraction form
    101,991.45/152,934.39 = 45,783.16/x
  3. Step 3: Cross multiply
    101,991.45x = 152,934.39 × 45,783.16
  4. Step 4: Simplify right side
    101,991.45x = 7,001,819,646.87
  5. Step 5: Solve for x
    x = 7,001,819,646.87/101,991.45
  6. Step 6: Final answer
    x = 68,651.05

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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.