Home / 52,912.87-79,349.29-21,312.20

Finding the Fourth Proportional to 52,912.87, 79,349.29 and 21,312.20

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Solution

The fourth proportional to 52,912.87, 79,349.29 and 21,312.20 is: 31,960.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,912.87 : 79,349.29 = 21,312.20 : x
  2. Step 2: Convert to fraction form
    52,912.87/79,349.29 = 21,312.20/x
  3. Step 3: Cross multiply
    52,912.87x = 79,349.29 × 21,312.20
  4. Step 4: Simplify right side
    52,912.87x = 1,691,108,083.43
  5. Step 5: Solve for x
    x = 1,691,108,083.43/52,912.87
  6. Step 6: Final answer
    x = 31,960.24

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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.