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Finding the Fourth Proportional to 43,570, 65,346.66 and 16,915.99

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Solution

The fourth proportional to 43,570, 65,346.66 and 16,915.99 is: 25,370.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,570 : 65,346.66 = 16,915.99 : x
  2. Step 2: Convert to fraction form
    43,570/65,346.66 = 16,915.99/x
  3. Step 3: Cross multiply
    43,570x = 65,346.66 × 16,915.99
  4. Step 4: Simplify right side
    43,570x = 1,105,403,447.09
  5. Step 5: Solve for x
    x = 1,105,403,447.09/43,570
  6. Step 6: Final answer
    x = 25,370.75

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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.