Home / 55,314.70-82,972.05-31,913.80

Finding the Fourth Proportional to 55,314.70, 82,972.05 and 31,913.80

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Solution

The fourth proportional to 55,314.70, 82,972.05 and 31,913.80 is: 47,870.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,314.70 : 82,972.05 = 31,913.80 : x
  2. Step 2: Convert to fraction form
    55,314.70/82,972.05 = 31,913.80/x
  3. Step 3: Cross multiply
    55,314.70x = 82,972.05 × 31,913.80
  4. Step 4: Simplify right side
    55,314.70x = 2,647,953,409.29
  5. Step 5: Solve for x
    x = 2,647,953,409.29/55,314.70
  6. Step 6: Final answer
    x = 47,870.70

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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.