Home / 76,480.20-105,544.01-42,491.79

Finding the Fourth Proportional to 76,480.20, 105,544.01 and 42,491.79

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Solution

The fourth proportional to 76,480.20, 105,544.01 and 42,491.79 is: 58,639.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,480.20 : 105,544.01 = 42,491.79 : x
  2. Step 2: Convert to fraction form
    76,480.20/105,544.01 = 42,491.79/x
  3. Step 3: Cross multiply
    76,480.20x = 105,544.01 × 42,491.79
  4. Step 4: Simplify right side
    76,480.20x = 4,484,754,014.91
  5. Step 5: Solve for x
    x = 4,484,754,014.91/76,480.20
  6. Step 6: Final answer
    x = 58,639.41

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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.