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Finding the Fourth Proportional to 51,991.68, 77,994 and 16,921.92

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Solution

The fourth proportional to 51,991.68, 77,994 and 16,921.92 is: 25,384.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,991.68 : 77,994 = 16,921.92 : x
  2. Step 2: Convert to fraction form
    51,991.68/77,994 = 16,921.92/x
  3. Step 3: Cross multiply
    51,991.68x = 77,994 × 16,921.92
  4. Step 4: Simplify right side
    51,991.68x = 1,319,808,228.48
  5. Step 5: Solve for x
    x = 1,319,808,228.48/51,991.68
  6. Step 6: Final answer
    x = 25,384.99

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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.