Home / 43,148.75-64,629.64-20,915.62

Finding the Fourth Proportional to 43,148.75, 64,629.64 and 20,915.62

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Solution

The fourth proportional to 43,148.75, 64,629.64 and 20,915.62 is: 31,328.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,148.75 : 64,629.64 = 20,915.62 : x
  2. Step 2: Convert to fraction form
    43,148.75/64,629.64 = 20,915.62/x
  3. Step 3: Cross multiply
    43,148.75x = 64,629.64 × 20,915.62
  4. Step 4: Simplify right side
    43,148.75x = 1,351,768,990.98
  5. Step 5: Solve for x
    x = 1,351,768,990.98/43,148.75
  6. Step 6: Final answer
    x = 31,328.11

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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.