Home / 76,306.32-105,308.11-42,318.06

Finding the Fourth Proportional to 76,306.32, 105,308.11 and 42,318.06

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Solution

The fourth proportional to 76,306.32, 105,308.11 and 42,318.06 is: 58,401.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,306.32 : 105,308.11 = 42,318.06 : x
  2. Step 2: Convert to fraction form
    76,306.32/105,308.11 = 42,318.06/x
  3. Step 3: Cross multiply
    76,306.32x = 105,308.11 × 42,318.06
  4. Step 4: Simplify right side
    76,306.32x = 4,456,434,575.46
  5. Step 5: Solve for x
    x = 4,456,434,575.46/76,306.32
  6. Step 6: Final answer
    x = 58,401.91

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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.