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Finding the Fourth Proportional to 51,579, 77,403.08 and 18,747

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Solution

The fourth proportional to 51,579, 77,403.08 and 18,747 is: 28,133.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,579 : 77,403.08 = 18,747 : x
  2. Step 2: Convert to fraction form
    51,579/77,403.08 = 18,747/x
  3. Step 3: Cross multiply
    51,579x = 77,403.08 × 18,747
  4. Step 4: Simplify right side
    51,579x = 1,451,075,540.76
  5. Step 5: Solve for x
    x = 1,451,075,540.76/51,579
  6. Step 6: Final answer
    x = 28,133.07

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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.