Home / 51,579.10-71,172.79-31,428.64

Finding the Fourth Proportional to 51,579.10, 71,172.79 and 31,428.64

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Solution

The fourth proportional to 51,579.10, 71,172.79 and 31,428.64 is: 43,367.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,579.10 : 71,172.79 = 31,428.64 : x
  2. Step 2: Convert to fraction form
    51,579.10/71,172.79 = 31,428.64/x
  3. Step 3: Cross multiply
    51,579.10x = 71,172.79 × 31,428.64
  4. Step 4: Simplify right side
    51,579.10x = 2,236,863,994.71
  5. Step 5: Solve for x
    x = 2,236,863,994.71/51,579.10
  6. Step 6: Final answer
    x = 43,367.64

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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.