Home / 70,380.12-105,569.24-28,259.44

Finding the Fourth Proportional to 70,380.12, 105,569.24 and 28,259.44

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Solution

The fourth proportional to 70,380.12, 105,569.24 and 28,259.44 is: 42,388.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,380.12 : 105,569.24 = 28,259.44 : x
  2. Step 2: Convert to fraction form
    70,380.12/105,569.24 = 28,259.44/x
  3. Step 3: Cross multiply
    70,380.12x = 105,569.24 × 28,259.44
  4. Step 4: Simplify right side
    70,380.12x = 2,983,327,410.35
  5. Step 5: Solve for x
    x = 2,983,327,410.35/70,380.12
  6. Step 6: Final answer
    x = 42,388.78

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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.