Home / 76,716.62-105,866.07-42,726.50

Finding the Fourth Proportional to 76,716.62, 105,866.07 and 42,726.50

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Solution

The fourth proportional to 76,716.62, 105,866.07 and 42,726.50 is: 58,960.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,716.62 : 105,866.07 = 42,726.50 : x
  2. Step 2: Convert to fraction form
    76,716.62/105,866.07 = 42,726.50/x
  3. Step 3: Cross multiply
    76,716.62x = 105,866.07 × 42,726.50
  4. Step 4: Simplify right side
    76,716.62x = 4,523,286,639.86
  5. Step 5: Solve for x
    x = 4,523,286,639.86/76,716.62
  6. Step 6: Final answer
    x = 58,960.97

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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.