Home / 51,221.20-76,880.40-31,538.20

Finding the Fourth Proportional to 51,221.20, 76,880.40 and 31,538.20

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Solution

The fourth proportional to 51,221.20, 76,880.40 and 31,538.20 is: 47,337.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,221.20 : 76,880.40 = 31,538.20 : x
  2. Step 2: Convert to fraction form
    51,221.20/76,880.40 = 31,538.20/x
  3. Step 3: Cross multiply
    51,221.20x = 76,880.40 × 31,538.20
  4. Step 4: Simplify right side
    51,221.20x = 2,424,669,431.28
  5. Step 5: Solve for x
    x = 2,424,669,431.28/51,221.20
  6. Step 6: Final answer
    x = 47,337.22

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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.