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Finding the Fourth Proportional to 43,618.48, 65,421.24 and 15,910

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Solution

The fourth proportional to 43,618.48, 65,421.24 and 15,910 is: 23,862.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,618.48 : 65,421.24 = 15,910 : x
  2. Step 2: Convert to fraction form
    43,618.48/65,421.24 = 15,910/x
  3. Step 3: Cross multiply
    43,618.48x = 65,421.24 × 15,910
  4. Step 4: Simplify right side
    43,618.48x = 1,040,851,928.40
  5. Step 5: Solve for x
    x = 1,040,851,928.40/43,618.48
  6. Step 6: Final answer
    x = 23,862.64

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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.