Home / 40,915.26-61,297.29-21,172.86

Finding the Fourth Proportional to 40,915.26, 61,297.29 and 21,172.86

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Solution

The fourth proportional to 40,915.26, 61,297.29 and 21,172.86 is: 31,720.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,915.26 : 61,297.29 = 21,172.86 : x
  2. Step 2: Convert to fraction form
    40,915.26/61,297.29 = 21,172.86/x
  3. Step 3: Cross multiply
    40,915.26x = 61,297.29 × 21,172.86
  4. Step 4: Simplify right side
    40,915.26x = 1,297,838,939.55
  5. Step 5: Solve for x
    x = 1,297,838,939.55/40,915.26
  6. Step 6: Final answer
    x = 31,720.17

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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.