Home / 52,512.90-78,774.24-20,915.34

Finding the Fourth Proportional to 52,512.90, 78,774.24 and 20,915.34

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Solution

The fourth proportional to 52,512.90, 78,774.24 and 20,915.34 is: 31,374.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,512.90 : 78,774.24 = 20,915.34 : x
  2. Step 2: Convert to fraction form
    52,512.90/78,774.24 = 20,915.34/x
  3. Step 3: Cross multiply
    52,512.90x = 78,774.24 × 20,915.34
  4. Step 4: Simplify right side
    52,512.90x = 1,647,590,012.84
  5. Step 5: Solve for x
    x = 1,647,590,012.84/52,512.90
  6. Step 6: Final answer
    x = 31,374.96

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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.