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Finding the Fourth Proportional to 43,579, 65,378.22 and 15,877

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Solution

The fourth proportional to 43,579, 65,378.22 and 15,877 is: 23,819.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,579 : 65,378.22 = 15,877 : x
  2. Step 2: Convert to fraction form
    43,579/65,378.22 = 15,877/x
  3. Step 3: Cross multiply
    43,579x = 65,378.22 × 15,877
  4. Step 4: Simplify right side
    43,579x = 1,038,009,998.94
  5. Step 5: Solve for x
    x = 1,038,009,998.94/43,579
  6. Step 6: Final answer
    x = 23,819.04

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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.