Home / 81,812.43-122,698.40-58,050.81

Finding the Fourth Proportional to 81,812.43, 122,698.40 and 58,050.81

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Solution

The fourth proportional to 81,812.43, 122,698.40 and 58,050.81 is: 87,061.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,812.43 : 122,698.40 = 58,050.81 : x
  2. Step 2: Convert to fraction form
    81,812.43/122,698.40 = 58,050.81/x
  3. Step 3: Cross multiply
    81,812.43x = 122,698.40 × 58,050.81
  4. Step 4: Simplify right side
    81,812.43x = 7,122,741,215.45
  5. Step 5: Solve for x
    x = 7,122,741,215.45/81,812.43
  6. Step 6: Final answer
    x = 87,061.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.