Home / 76,406.46-105,446.07-42,418.86

Finding the Fourth Proportional to 76,406.46, 105,446.07 and 42,418.86

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Solution

The fourth proportional to 76,406.46, 105,446.07 and 42,418.86 is: 58,540.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,406.46 : 105,446.07 = 42,418.86 : x
  2. Step 2: Convert to fraction form
    76,406.46/105,446.07 = 42,418.86/x
  3. Step 3: Cross multiply
    76,406.46x = 105,446.07 × 42,418.86
  4. Step 4: Simplify right side
    76,406.46x = 4,472,902,080.88
  5. Step 5: Solve for x
    x = 4,472,902,080.88/76,406.46
  6. Step 6: Final answer
    x = 58,540.89

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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.