Home / 76,261.28-105,246.86-42,280.43

Finding the Fourth Proportional to 76,261.28, 105,246.86 and 42,280.43

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Solution

The fourth proportional to 76,261.28, 105,246.86 and 42,280.43 is: 58,350.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,261.28 : 105,246.86 = 42,280.43 : x
  2. Step 2: Convert to fraction form
    76,261.28/105,246.86 = 42,280.43/x
  3. Step 3: Cross multiply
    76,261.28x = 105,246.86 × 42,280.43
  4. Step 4: Simplify right side
    76,261.28x = 4,449,882,589.15
  5. Step 5: Solve for x
    x = 4,449,882,589.15/76,261.28
  6. Step 6: Final answer
    x = 58,350.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.