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Finding the Fourth Proportional to 43,695.48, 65,536.74 and 15,987

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Solution

The fourth proportional to 43,695.48, 65,536.74 and 15,987 is: 23,978.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,695.48 : 65,536.74 = 15,987 : x
  2. Step 2: Convert to fraction form
    43,695.48/65,536.74 = 15,987/x
  3. Step 3: Cross multiply
    43,695.48x = 65,536.74 × 15,987
  4. Step 4: Simplify right side
    43,695.48x = 1,047,735,862.38
  5. Step 5: Solve for x
    x = 1,047,735,862.38/43,695.48
  6. Step 6: Final answer
    x = 23,978.13

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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.